Trial Outcomes & Findings for The Impact of Oral Ethanol and Vaped Ethanol on the Evaluation of Impairment (NCT NCT04522973)

NCT ID: NCT04522973

Last Updated: 2026-01-14

Results Overview

Blood alcohol concentration (BAC) level was determined 6 times over 6 hours to assess for changes in BAC from use of an e-cigarette containing ethanol compared to the use of an e-cigarette without ethanol.

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

12 participants

Primary outcome timeframe

Blood collected before (baseline) and after (0, 40, 55, 200, 215) drinking. The e-cigarette was used at 50 and 210 minutes post-drinking.

Results posted on

2026-01-14

Participant Flow

Participant milestones

Participant milestones
Measure
Within Group Four Condition Comparison
Participants completed four \~5-hour, Latin-square ordered sessions separated by ≥48 hours. Session order was not recorded as it was not relevant to the study outcomes. Session interventions were as follows: * Placebo drink: Placebo vape (Beverage without ethanol and E-cigarette liquid without ethanol) * Placebo drink: Active vape (Beverage without ethanol and E-cigarette liquid with 20% ethanol) * Active drink: Placebo vape (Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol) * Active drink: Active vape (Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol)
Overall Study
STARTED
12
Overall Study
COMPLETED
7
Overall Study
NOT COMPLETED
5

Reasons for withdrawal

Reasons for withdrawal
Measure
Within Group Four Condition Comparison
Participants completed four \~5-hour, Latin-square ordered sessions separated by ≥48 hours. Session order was not recorded as it was not relevant to the study outcomes. Session interventions were as follows: * Placebo drink: Placebo vape (Beverage without ethanol and E-cigarette liquid without ethanol) * Placebo drink: Active vape (Beverage without ethanol and E-cigarette liquid with 20% ethanol) * Active drink: Placebo vape (Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol) * Active drink: Active vape (Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol)
Overall Study
Lost to Follow-up
4
Overall Study
Could not adhere to study schedule
1

Baseline Characteristics

The Impact of Oral Ethanol and Vaped Ethanol on the Evaluation of Impairment

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Within Group Four Condition Comparison
n=7 Participants
Participants completed four \~5-hour, Latin-square ordered sessions separated by ≥48 hours. Session order was not recorded as it was not relevant to the study outcomes. Session interventions were as follows: * Placebo drink: Placebo vape (Beverage without ethanol and E-cigarette liquid without ethanol) * Placebo drink: Active vape (Beverage without ethanol and E-cigarette liquid with 20% ethanol) * Active drink: Placebo vape (Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol) * Active drink: Active vape (Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol)
Age, Continuous
24.6 years
STANDARD_DEVIATION 3.5 • n=14 Participants
Sex: Female, Male
Female
2 Participants
n=14 Participants
Sex: Female, Male
Male
5 Participants
n=14 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
n=14 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
7 Participants
n=14 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=14 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=14 Participants
Race (NIH/OMB)
Asian
2 Participants
n=14 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=14 Participants
Race (NIH/OMB)
Black or African American
2 Participants
n=14 Participants
Race (NIH/OMB)
White
3 Participants
n=14 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=14 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=14 Participants
Region of Enrollment
United States
7 participants
n=14 Participants

PRIMARY outcome

Timeframe: Blood collected before (baseline) and after (0, 40, 55, 200, 215) drinking. The e-cigarette was used at 50 and 210 minutes post-drinking.

Population: Blood Alcohol Concentration (% alcohol)

Blood alcohol concentration (BAC) level was determined 6 times over 6 hours to assess for changes in BAC from use of an e-cigarette containing ethanol compared to the use of an e-cigarette without ethanol.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Blood Alcohol Concentration
200 Minute Collection Post-Drinking
.037 percent alcohol
Standard Deviation .013
.039 percent alcohol
Standard Deviation .009
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
Blood Alcohol Concentration
210 Minute Collection Post-Drinking
.032 percent alcohol
Standard Deviation .013
.034 percent alcohol
Standard Deviation .011
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
Blood Alcohol Concentration
Baseline Collection
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
Blood Alcohol Concentration
0 Minute Collection Post-Drinking
.070 percent alcohol
Standard Deviation .037
.061 percent alcohol
Standard Deviation .045
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
Blood Alcohol Concentration
40 Minute Collection Post-Drinking
.080 percent alcohol
Standard Deviation .022
.088 percent alcohol
Standard Deviation .045
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
Blood Alcohol Concentration
55 Minute Collection Post-Drinking
.072 percent alcohol
Standard Deviation .016
.075 percent alcohol
Standard Deviation .008
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0

PRIMARY outcome

Timeframe: Breath was analyzed before (baseline) and after (10, 20, 40, 55, 90, 120, 165, 200, 215, 240, 270 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.

Population: Blood Alcohol Concentration (% alcohol)

Breath Alcohol Concentration (BrAC) was assessed 12 times over 6 hours to determine changes in BrAC from the use of an e-cigarette containing ethanol compared to the use of an e-cigarette without ethanol.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Breath Alcohol Concentration
90 minute collection post-drinking
.049 percent alcohol
Standard Deviation .011
.053 percent alcohol
Standard Deviation .008
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
Breath Alcohol Concentration
120 minute collection post-drinking
.042 percent alcohol
Standard Deviation .010
.045 percent alcohol
Standard Deviation .009
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
Breath Alcohol Concentration
165 minute collection post-drinking
.033 percent alcohol
Standard Deviation .009
.035 percent alcohol
Standard Deviation .007
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
Breath Alcohol Concentration
200 minute collection post-drinking
.026 percent alcohol
Standard Deviation .009
.027 percent alcohol
Standard Deviation .008
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
Breath Alcohol Concentration
215 minute collection post-drinking
.018 percent alcohol
Standard Deviation .006
.024 percent alcohol
Standard Deviation .005
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
Breath Alcohol Concentration
240 minute collection post-drinking
.016 percent alcohol
Standard Deviation .010
.016 percent alcohol
Standard Deviation 011
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
Breath Alcohol Concentration
270 minute collection post-drinking
.009 percent alcohol
Standard Deviation .009
.011 percent alcohol
Standard Deviation .009
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
Breath Alcohol Concentration
10 minute collection post-drinking
.069 percent alcohol
Standard Deviation .024
.080 percent alcohol
Standard Deviation .0245
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
Breath Alcohol Concentration
20 minute collection post-drinking
.071 percent alcohol
Standard Deviation .024
.079 percent alcohol
Standard Deviation .025
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
Breath Alcohol Concentration
40 minute collection post-drinking
.067 percent alcohol
Standard Deviation .014
.073 percent alcohol
Standard Deviation .012
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
Breath Alcohol Concentration
55 minute collection post-drinking
.054 percent alcohol
Standard Deviation .012
.061 percent alcohol
Standard Deviation .005
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
Breath Alcohol Concentration
Baseline
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0
0 percent alcohol
Standard Deviation 0

PRIMARY outcome

Timeframe: Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.

Population: Blood Alcohol Concentration (% alcohol)

Oral fluid alcohol concentration (OFAC) was assessed 9 times over 6 hours to determine changes in OFAC from the use of an e-cigarette containing ethanol compared to use of an e-cigarette without ethanol.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Oral Fluid Alcohol Concentration (OFAC)
Baseline Collection
0 Percent Alcohol
Standard Deviation 0
0 Percent Alcohol
Standard Deviation 0
0 Percent Alcohol
Standard Deviation 0
0 Percent Alcohol
Standard Deviation 0
Oral Fluid Alcohol Concentration (OFAC)
0 minute collection post-drinking
.146 Percent Alcohol
Standard Deviation .075
.124 Percent Alcohol
Standard Deviation .025
0 Percent Alcohol
Standard Deviation 0
0 Percent Alcohol
Standard Deviation 0
Oral Fluid Alcohol Concentration (OFAC)
5 minute collection post-drinking
.118 Percent Alcohol
Standard Deviation .055
.106 Percent Alcohol
Standard Deviation .052
0 Percent Alcohol
Standard Deviation 0
0 Percent Alcohol
Standard Deviation 0
Oral Fluid Alcohol Concentration (OFAC)
20 minute collection post-drinking
.102 Percent Alcohol
Standard Deviation .043
.109 Percent Alcohol
Standard Deviation .021
0 Percent Alcohol
Standard Deviation 0
0 Percent Alcohol
Standard Deviation 0
Oral Fluid Alcohol Concentration (OFAC)
40 minute collection post-drinking
.092 Percent Alcohol
Standard Deviation .031
.104 Percent Alcohol
Standard Deviation .018
0 Percent Alcohol
Standard Deviation 0
0 Percent Alcohol
Standard Deviation 0
Oral Fluid Alcohol Concentration (OFAC)
55 minute collection post-drinking
.081 Percent Alcohol
Standard Deviation .025
.091 Percent Alcohol
Standard Deviation .017
0 Percent Alcohol
Standard Deviation 0
0 Percent Alcohol
Standard Deviation 0
Oral Fluid Alcohol Concentration (OFAC)
200 minute collection post-drinking
.036 Percent Alcohol
Standard Deviation .014
.040 Percent Alcohol
Standard Deviation .013
0 Percent Alcohol
Standard Deviation 0
0 Percent Alcohol
Standard Deviation 0
Oral Fluid Alcohol Concentration (OFAC)
215 minute collection post-drinking
.032 Percent Alcohol
Standard Deviation .020
.033 Percent Alcohol
Standard Deviation .019
0 Percent Alcohol
Standard Deviation 0
0 Percent Alcohol
Standard Deviation 0
Oral Fluid Alcohol Concentration (OFAC)
240 minute collection post-drinking
.023 Percent Alcohol
Standard Deviation .019
.023 Percent Alcohol
Standard Deviation .018
0 Percent Alcohol
Standard Deviation 0
0 Percent Alcohol
Standard Deviation 0

PRIMARY outcome

Timeframe: Blood was collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.

Population: Ethanol Biomarker (5-Hydroxytryptophol) ng/mL

5-Hydroxytryptophol was analyzed in blood 6 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Ethanol Biomarker (5-Hydroxytryptophol) in Blood
Baseline Collection
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarker (5-Hydroxytryptophol) in Blood
0 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarker (5-Hydroxytryptophol) in Blood
40 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarker (5-Hydroxytryptophol) in Blood
55 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarker (5-Hydroxytryptophol) in Blood
200 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarker (5-Hydroxytryptophol) in Blood
215 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0

PRIMARY outcome

Timeframe: Blood was collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.

Population: Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) ng/mL

5-Hydroxyindoleacetic acid was analyzed in blood 6 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) in Blood
Baseline Collection
44 ng/mL
Standard Deviation 75
121 ng/mL
Standard Deviation 149
80 ng/mL
Standard Deviation 81
90 ng/mL
Standard Deviation 91
Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) in Blood
0 minute collection post-drinking
44 ng/mL
Standard Deviation 29
76 ng/mL
Standard Deviation 36
91 ng/mL
Standard Deviation 97
34 ng/mL
Standard Deviation 59
Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) in Blood
40 minute collection post-drinking
30 ng/mL
Standard Deviation 51
63 ng/mL
Standard Deviation 81
97 ng/mL
Standard Deviation 96
93 ng/mL
Standard Deviation 93
Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) in Blood
55 minute collection post-drinking
61 ng/mL
Standard Deviation 80
0 ng/mL
Standard Deviation 0
103 ng/mL
Standard Deviation 103
75 ng/mL
Standard Deviation 99
Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) in Blood
200 minute collection post-drinking
71 ng/mL
Standard Deviation 94
90 ng/mL
Standard Deviation 86
123 ng/mL
Standard Deviation 98
132 ng/mL
Standard Deviation 103
Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) in Blood
215 minute collection post-drinking
73 ng/mL
Standard Deviation 97
83 ng/mL
Standard Deviation 114
82 ng/mL
Standard Deviation 81
106 ng/mL
Standard Deviation 79

PRIMARY outcome

Timeframe: Blood was collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.

Population: Ethanol Biomarkers (Ethyl Sulfate) ng/mL

Ethyl sulfate was analyzed in blood 6 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Ethanol Biomarkers (Ethyl Sulfate) Analyzed in Blood/ E-cig Containing Ethanol
Baseline Collection
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Sulfate) Analyzed in Blood/ E-cig Containing Ethanol
0 minute collection post-drinking
16 ng/mL
Standard Deviation 28
10 ng/mL
Standard Deviation 26
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Sulfate) Analyzed in Blood/ E-cig Containing Ethanol
40 minute collection post-drinking
167 ng/mL
Standard Deviation 80
184 ng/mL
Standard Deviation 52
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Sulfate) Analyzed in Blood/ E-cig Containing Ethanol
55 minute collection post-drinking
207 ng/mL
Standard Deviation 67
211 ng/mL
Standard Deviation 46
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Sulfate) Analyzed in Blood/ E-cig Containing Ethanol
200 minute collection post-drinking
228 ng/mL
Standard Deviation 68
239 ng/mL
Standard Deviation 55
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Sulfate) Analyzed in Blood/ E-cig Containing Ethanol
215 minute collection post-drinking
218 ng/mL
Standard Deviation 67
224 ng/mL
Standard Deviation 50
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0

PRIMARY outcome

Timeframe: Blood was collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.

Population: Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) in Blood ng/mL

Phosphatidylethanol 16:0-18:1 was analyzed in blood 6 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) in Blood
Baseline Collection
647 ng/mL
Standard Deviation 790
409 ng/mL
Standard Deviation 323
402 ng/mL
Standard Deviation 438
416 ng/mL
Standard Deviation 432
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) in Blood
0 minute collection post-drinking
487 ng/mL
Standard Deviation 570
318 ng/mL
Standard Deviation 269
338 ng/mL
Standard Deviation 443
304 ng/mL
Standard Deviation 433
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) in Blood
40 minute collection post-drinking
562 ng/mL
Standard Deviation 688
306 ng/mL
Standard Deviation 270
345 ng/mL
Standard Deviation 460
322 ng/mL
Standard Deviation 442
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) in Blood
55 minute collection post-drinking
589 ng/mL
Standard Deviation 699
374 ng/mL
Standard Deviation 284
330 ng/mL
Standard Deviation 401
292 ng/mL
Standard Deviation 339
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) in Blood
200 minute collection post-drinking
547 ng/mL
Standard Deviation 722
319 ng/mL
Standard Deviation 297
352 ng/mL
Standard Deviation 489
302 ng/mL
Standard Deviation 353
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) in Blood
215 minute collection post-drinking
718 ng/mL
Standard Deviation 744
450 ng/mL
Standard Deviation 239
639 ng/mL
Standard Deviation 739
411 ng/mL
Standard Deviation 397

PRIMARY outcome

Timeframe: Blood was collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.

Population: Ethanol Biomarkers (Phosphatidylethanol 16:0-18:2) in Blood ng/mL

Phosphatidylethanol 16:0-18:2 was analyzed in blood 6 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:2) in Blood
Baseline Collection
1256 ng/mL
Standard Deviation 1756
938 ng/mL
Standard Deviation 784
894 ng/mL
Standard Deviation 956
1013 ng/mL
Standard Deviation 1403
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:2) in Blood
0 minute collection post-drinking
771 ng/mL
Standard Deviation 939
616 ng/mL
Standard Deviation 577
549 ng/mL
Standard Deviation 757
549 ng/mL
Standard Deviation 894
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:2) in Blood
40 minute collection post-drinking
927 ng/mL
Standard Deviation 1214
617 ng/mL
Standard Deviation 589
563 ng/mL
Standard Deviation 806
572 ng/mL
Standard Deviation 768
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:2) in Blood
55 minute collection post-drinking
862 ng/mL
Standard Deviation 1061
832 ng/mL
Standard Deviation 587
574 ng/mL
Standard Deviation 758
466 ng/mL
Standard Deviation 580
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:2) in Blood
200 minute collection post-drinking
1028 ng/mL
Standard Deviation 1479
602 ng/mL
Standard Deviation 500
636 ng/mL
Standard Deviation 1000
494 ng/mL
Standard Deviation 685
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:2) in Blood
215 minute collection post-drinking
1544 ng/mL
Standard Deviation 1417
1081 ng/mL
Standard Deviation 480
1630 ng/mL
Standard Deviation 2090
889 ng/mL
Standard Deviation 873

PRIMARY outcome

Timeframe: Blood collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.

Population: Ethanol Biomarkers (5-Hydroxytryptophol Glucuronide) in Blood ng/mL

5-Hydroxytryptophol glucuronide was analyzed in blood 6 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Ethanol Biomarkers (5-Hydroxytryptophol Glucuronide) Analyzed in Blood
Baseline collection
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxytryptophol Glucuronide) Analyzed in Blood
0 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxytryptophol Glucuronide) Analyzed in Blood
40 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxytryptophol Glucuronide) Analyzed in Blood
55 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxytryptophol Glucuronide) Analyzed in Blood
200 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxytryptophol Glucuronide) Analyzed in Blood
215 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0

PRIMARY outcome

Timeframe: Blood collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking

Population: Ethanol Biomarkers (Ethyl Glucuronide ) in Blood ng/mL

Ethyl glucuronide was analyzed in blood 6 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Ethanol Biomarkers (5-Hydroxytryptophol) in Blood
Baseline
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxytryptophol) in Blood
0 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxytryptophol) in Blood
40 minute collection post-drinking
145 ng/mL
Standard Deviation 53
128 ng/mL
Standard Deviation 29
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxytryptophol) in Blood
55 minute collection post-drinking
175 ng/mL
Standard Deviation 52
187 ng/mL
Standard Deviation 41
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxytryptophol) in Blood
200 minute collection post-drinking
331 ng/mL
Standard Deviation 88
406 ng/mL
Standard Deviation 104
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxytryptophol) in Blood
215 minute collection post-drinking
325 ng/mL
Standard Deviation 94
337 ng/mL
Standard Deviation 116
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0

PRIMARY outcome

Timeframe: Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking

Population: Ethanol Biomarkers (5-Hydroxytryptophol) in Oral Fluid ng/mL

5-Hydroxyindoleacetic acid was analyzed in oral fluid 9 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Ethanol Biomarkers (5-Hydroxytryptophol) in Analyzed in Oral Fluid
Baseline
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxytryptophol) in Analyzed in Oral Fluid
0 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxytryptophol) in Analyzed in Oral Fluid
5 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxytryptophol) in Analyzed in Oral Fluid
20 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxytryptophol) in Analyzed in Oral Fluid
40 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxytryptophol) in Analyzed in Oral Fluid
55 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxytryptophol) in Analyzed in Oral Fluid
200 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxytryptophol) in Analyzed in Oral Fluid
215 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxytryptophol) in Analyzed in Oral Fluid
240 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0

PRIMARY outcome

Timeframe: Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.

Population: Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) in Oral Fluid ng/mL

5-Hydroxyindoleacetic acid was analyzed in oral fluid 9 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) Analyzed in Oral Fluid
5 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) Analyzed in Oral Fluid
20 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) Analyzed in Oral Fluid
40 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) Analyzed in Oral Fluid
55 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) Analyzed in Oral Fluid
200 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) Analyzed in Oral Fluid
215 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) Analyzed in Oral Fluid
240 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) Analyzed in Oral Fluid
Baseline Collection
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (5-Hydroxyindoleacetic Acid) Analyzed in Oral Fluid
0 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0

PRIMARY outcome

Timeframe: Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participant at 50 and 210 minutes post-drinking

Population: Ethanol Biomarkers (Ethyl Sulfate) in Oral Fluid ng/mL

Ethyl sulfate was analyzed in oral fluid 9 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Ethanol Biomarkers (Ethyl Sulfate) Analyzed in Oral Fluid
Baseline Collection
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Sulfate) Analyzed in Oral Fluid
0 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Sulfate) Analyzed in Oral Fluid
5 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Sulfate) Analyzed in Oral Fluid
20 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Sulfate) Analyzed in Oral Fluid
40 minute collection post-drinking
8 ng/mL
Standard Deviation 21
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Sulfate) Analyzed in Oral Fluid
55 minute collection post-drinking
26 ng/mL
Standard Deviation 49
8 ng/mL
Standard Deviation 21
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Sulfate) Analyzed in Oral Fluid
200 minute collection post-drinking
25 ng/mL
Standard Deviation 47
53 ng/mL
Standard Deviation 103
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Sulfate) Analyzed in Oral Fluid
215 minute collection post-drinking
29 ng/mL
Standard Deviation 37
19 ng/mL
Standard Deviation 33
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Sulfate) Analyzed in Oral Fluid
240 minute collection post-drinking
33 ng/mL
Standard Deviation 61
44 ng/mL
Standard Deviation 58
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0

PRIMARY outcome

Timeframe: Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.

Population: Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) in Oral Fluid ng/mL

Phosphatidylethanol 16:0-18:1 was analyzed in oral fluid 9 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) Analyzed in Blood
Baseline Collection
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) Analyzed in Blood
0 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) Analyzed in Blood
5 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) Analyzed in Blood
20 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) Analyzed in Blood
40 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) Analyzed in Blood
55 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) Analyzed in Blood
200 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) Analyzed in Blood
215 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:1) Analyzed in Blood
240 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0

PRIMARY outcome

Timeframe: Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participants at 50 and 210 minutes post-drinking.

Population: Ethanol Biomarkers (Phosphatidylethanol 16:0-18:2) in Oral Fluid ng/mL

Phosphatidylethanol 16:0-18:2 was analyzed in oral fluid 9 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:2) in Oral Fluid
Baseline Collection
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:2) in Oral Fluid
0 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:2) in Oral Fluid
20 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:2) in Oral Fluid
40 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:2) in Oral Fluid
240 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:2) in Oral Fluid
55 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:2) in Oral Fluid
200 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Phosphatidylethanol 16:0-18:2) in Oral Fluid
215 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0

PRIMARY outcome

Timeframe: Blood collected before (baseline) and after (0, 40, 55, 200, 215 min) drinking. The e-cigarette was used by the participant at 50 and 210 minutes post-drinking.

Population: Ethanol Biomarkers (5-Hydroxytryptophol Glucuronide) ng/mL

Ethyl glucuronide was analyzed in blood 6 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Blood
Baseline Collection
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Blood
0 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Blood
5 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Blood
20 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Blood
40 minute collection post-drinking
145 ng/mL
Standard Deviation 53
128 ng/mL
Standard Deviation 29
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Blood
55 minute collection post-drinking
175 ng/mL
Standard Deviation 52
187 ng/mL
Standard Deviation 41
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Blood
200 minute collection post-drinking
331 ng/mL
Standard Deviation 88
406 ng/mL
Standard Deviation 104
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Blood
215 minute collection post-drinking
325 ng/mL
Standard Deviation 94
337 ng/mL
Standard Deviation 116
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Blood
240 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0

PRIMARY outcome

Timeframe: Oral fluid was collected before (baseline) and after (0, 5, 20, 40, 55, 200, 215, 240 min) drinking. The e-cigarette was used by the participant at 50 and 210 minutes post-drinking

Population: Ethanol Biomarkers (Ethyl Glucuronide) in Oral Fluid ng/mL

Ethyl glucuronide was analyzed in oral fluid 9 times over a course of 6 hours to assess changes in determined concentrations from use of an electronic cigarette containing ethanol.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Oral Fluid
Baseline Collection
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Oral Fluid
0 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Oral Fluid
5 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Oral Fluid
20 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Oral Fluid
40 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Oral Fluid
55 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Oral Fluid
200 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Oral Fluid
215 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
Ethanol Biomarkers (Ethyl Glucuronide) Analyzed in Oral Fluid
240 minute collection post-drinking
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0
0 ng/mL
Standard Deviation 0

SECONDARY outcome

Timeframe: Conducted before drinking (baseline), at 20 minutes post-drinking (before first vaping bout), at 55 minutes post-drinking (after the first vaping), and at 215 minutes post-drinking (after second vaping bout).

Population: Horizontal Gaze Nystagmus # of clues observed

Standard Field Sobriety Tests (SFSTs) were administered 4 times over a course of 6 hours to assess changes in objective impairment. The SFST includes the Horizontal Gaze Nystagmus (a jerking or stuttering type of movement observed in a person's eyes that occurs as a result of consuming alcohol or other nervous system depressants) test. For each test, a law enforcement officer records the number of clues observed. HGN has a maximum of 6 clues, 3 per eye: 1. lack of smooth pursuit 2. distinct and sustained nystagmus at maximum deviation 3. onset of nystagmus prior to 45 degrees.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Horizontal Gaze Nystagmus
Baseline
.7 Number of Clues Observed
Standard Deviation 1.0
.3 Number of Clues Observed
Standard Deviation .8
0 Number of Clues Observed
Standard Deviation 0
.9 Number of Clues Observed
Standard Deviation .9
Horizontal Gaze Nystagmus
Before the 1st Vaping Bout
3.1 Number of Clues Observed
Standard Deviation 2.1
3.9 Number of Clues Observed
Standard Deviation 1.7
.4 Number of Clues Observed
Standard Deviation .8
.9 Number of Clues Observed
Standard Deviation .9
Horizontal Gaze Nystagmus
After the 1st Vaping Bout
3.0 Number of Clues Observed
Standard Deviation 1.8
3.4 Number of Clues Observed
Standard Deviation 1.7
.4 Number of Clues Observed
Standard Deviation .8
.9 Number of Clues Observed
Standard Deviation 1.1
Horizontal Gaze Nystagmus
After the 2nd Vaping Bout
.7 Number of Clues Observed
Standard Deviation 1.0
1.9 Number of Clues Observed
Standard Deviation 1.3
.3 Number of Clues Observed
Standard Deviation .8
1.1 Number of Clues Observed
Standard Deviation 1.5

SECONDARY outcome

Timeframe: Conducted before drinking (baseline), at 20 minutes post-drinking (before first vaping bout), at 55 minutes post-drinking (after the first vaping), and at 215 minutes post-drinking (after second vaping bout).

Population: Walk and Turn Test, # of clues observed

Standard Field Sobriety Tests (SFSTs) were administered 4 times over a course of 6 hours to assess changes in objective impairment. The SFST includes the walk and turn test (suspect to perform a physical task while simultaneously following instructions and maintaining balance; involves walking a straight line heel-to-toe, turning, and walking back, with officers looking for specific indicators of impairment). For each test, a law enforcement officer records the number of clues observed. WAT has a maximum of 8 clues: 1. inability to balance during the instruction phase 2. starting before the officer has finished the instructions 3. Stopping while walking to regain balance 4. Not touching heel-to-toe 5. Stepping off the line 6. Using arms to balance 7. Losing balance on the turn or turning incorrectly 8. Taking the wrong number of steps

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Walk and Turn Test
Baseline
.9 Number of Clues Observed
Standard Deviation .9
.6 Number of Clues Observed
Standard Deviation .5
.6 Number of Clues Observed
Standard Deviation .8
.9 Number of Clues Observed
Standard Deviation 1.1
Walk and Turn Test
Before the 1st Vaping Bout
1.1 Number of Clues Observed
Standard Deviation 1.3
1.1 Number of Clues Observed
Standard Deviation 1.2
.4 Number of Clues Observed
Standard Deviation .8
.9 Number of Clues Observed
Standard Deviation .7
Walk and Turn Test
After the 1st Vaping Bout
1.0 Number of Clues Observed
Standard Deviation 1.3
1.1 Number of Clues Observed
Standard Deviation 1.1
.3 Number of Clues Observed
Standard Deviation .5
.4 Number of Clues Observed
Standard Deviation .8
Walk and Turn Test
After the 2nd Vaping Bout
.6 Number of Clues Observed
Standard Deviation .5
.7 Number of Clues Observed
Standard Deviation .8
.1 Number of Clues Observed
Standard Deviation .4
.7 Number of Clues Observed
Standard Deviation .8

SECONDARY outcome

Timeframe: Conducted before drinking (baseline), at 20 minutes post-drinking (before first vaping bout), at 55 minutes post-drinking (after the first vaping), and at 215 minutes post-drinking (after second vaping bout).

Population: One leg stand test, # of clues observed

Standard Field Sobriety Tests (SFSTs) were administered 4 times over a course of 6 hours to assess changes in objective impairment. The SFST includes the one-leg stand test (assess balance and coordination, potentially indicating impairment due to alcohol or drugs). For each test, a law enforcement officer records the number of clues observed. OLS has a maximum of 4 clues: Swaying while balancing, Using arms for balance, Hopping 4. Putting the raised foot down

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
One Leg Stand Test
Before the 1st Vaping Bout
.9 Number of Clues observed
Standard Deviation 1.5
1 Number of Clues observed
Standard Deviation 1.3
.3 Number of Clues observed
Standard Deviation .5
0 Number of Clues observed
Standard Deviation 0
One Leg Stand Test
Baseline
.4 Number of Clues observed
Standard Deviation .5
.7 Number of Clues observed
Standard Deviation .8
.6 Number of Clues observed
Standard Deviation .8
.7 Number of Clues observed
Standard Deviation 1.1
One Leg Stand Test
After the 1st Vaping Bout
.4 Number of Clues observed
Standard Deviation .8
1.1 Number of Clues observed
Standard Deviation 1.3
.6 Number of Clues observed
Standard Deviation .8
.3 Number of Clues observed
Standard Deviation .5
One Leg Stand Test
After the 2nd Vaping Bout
.3 Number of Clues observed
Standard Deviation .5
.4 Number of Clues observed
Standard Deviation .8
.6 Number of Clues observed
Standard Deviation .8
.3 Number of Clues observed
Standard Deviation .5

OTHER_PRE_SPECIFIED outcome

Timeframe: Administered at baseline, 55 minutes post-drinking (after first vape bout), and 215 minutes post-drinking (after second vape bout).

Population: Subjective High Assessment Scale Questionnaire (SHAS) Total score

Subjective High Assessment Scale Questionnaire (SHAS) is a 14-item questionnaire used to assess how intoxicated a person feels after consuming alcohol, typically administered in laboratory settings. It focuses on capturing subjective sensations associated with intoxication, such as feeling "clumsy," "dizzy," or "high". Participants rate their experience on a visual analog scale (a line with markings) to indicate the extent to which they feel each symptom at a given time. The scale ranges from Normal" (0) to "Extremely" (100). The score for each of the questions is summed to give an overall indication of the individual's subjective intoxication. A higher score would indicate greater feelings of impairment.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Subjective High Assessment Scale Questionnaire (SHAS)
Baseline
38 SHAS Total score
Standard Deviation 41
29 SHAS Total score
Standard Deviation 30
60 SHAS Total score
Standard Deviation 74
58 SHAS Total score
Standard Deviation 75
Subjective High Assessment Scale Questionnaire (SHAS)
After e-cig use at 55 minutes
244 SHAS Total score
Standard Deviation 271
286 SHAS Total score
Standard Deviation 241
91 SHAS Total score
Standard Deviation 64
78 SHAS Total score
Standard Deviation 71
Subjective High Assessment Scale Questionnaire (SHAS)
After e-cig use at 215 minutes
105 SHAS Total score
Standard Deviation 132
172 SHAS Total score
Standard Deviation 229
52 SHAS Total score
Standard Deviation 47
48 SHAS Total score
Standard Deviation 51

OTHER_PRE_SPECIFIED outcome

Timeframe: Administered at baseline, 55 minutes post-drinking (after first vape bout), and 215 minutes post-drinking (after second vape bout).

Population: Biphasic Alcohol Effects Scale Questionnaire (BAES) total score

Biphasic Alcohol Effects Scale Questionnaire (BAES) is a 14-item questionnaire consisting of adjectives that describe the stimulant- and sedative-like effects of alcohol. The items are presented in alphabetical order, and are rated on an 11-point rating scale from 0=Not at All to 10=Extremely. The score for each of the questions was summed to give an overall indication of the individual's subjective intoxication. A higher score would indicate greater feelings of impairment.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Biphasic Alcohol Effects Scale Questionnaire (BAES)
After e-cig use at 55 minutes
33 (BAES) total score
Standard Deviation 17
36 (BAES) total score
Standard Deviation 14
22 (BAES) total score
Standard Deviation 11
25 (BAES) total score
Standard Deviation 11
Biphasic Alcohol Effects Scale Questionnaire (BAES)
Baseline
28 (BAES) total score
Standard Deviation 15
25 (BAES) total score
Standard Deviation 14
22 (BAES) total score
Standard Deviation 15
25 (BAES) total score
Standard Deviation 11
Biphasic Alcohol Effects Scale Questionnaire (BAES)
After e-cig use at 215 minutes
28 (BAES) total score
Standard Deviation 12
32 (BAES) total score
Standard Deviation 12
24 (BAES) total score
Standard Deviation 14
24 (BAES) total score
Standard Deviation 14

OTHER_PRE_SPECIFIED outcome

Timeframe: Administered at baseline, 55 minutes post-drinking (after first vape bout), and 215 minutes post-drinking (after second vape bout).

Population: General Labeled Magnitude Scale Questionnaire (gLMS) total score

The general labeled magnitude scale (gLMS) is a psychophysical scaling method used to measure the perceived intensity of various sensations. A gLMS typically ranges from 0 (undetectable) to 100 (strongest imaginable sensation/experience of any kind). Crucially, it uses specific labels positioned at specific points on the scale (e.g., barely detectable, weak, moderate, strong, very strong). The gLMS was comprised of 3 questions asking participants to indicate the overall flavor sensation, harshness, and throat hit of the e-cigarette. The score for each of the questions was summed. A higher score would indicate greater sensations from e-cigarette use.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
General Labeled Magnitude Scale Questionnaire (gLMS)
Baseline
0 (gLMS) total score
Standard Deviation 0
0 (gLMS) total score
Standard Deviation 0
0 (gLMS) total score
Standard Deviation 0
0 (gLMS) total score
Standard Deviation 0
General Labeled Magnitude Scale Questionnaire (gLMS)
After e-cig use at 55 minutes
86 (gLMS) total score
Standard Deviation 66
105 (gLMS) total score
Standard Deviation 57
91 (gLMS) total score
Standard Deviation 51
108 (gLMS) total score
Standard Deviation 58
General Labeled Magnitude Scale Questionnaire (gLMS)
After e-cig use at 215 minutes
101 (gLMS) total score
Standard Deviation 61
81 (gLMS) total score
Standard Deviation 69
83 (gLMS) total score
Standard Deviation 63
105 (gLMS) total score
Standard Deviation 67

OTHER_PRE_SPECIFIED outcome

Timeframe: Administered at baseline, 55 minutes post-drinking (after first vape bout), and 215 minutes post-drinking (after second vape bout).

Population: Labeled Hedonic Scale Questionnaire (LHS) total score

A survey tool used to measure how much someone likes or dislikes something using descriptive labels for different levels of liking and disliking. Instead of just numbers, the scale uses words or phrases that describe the intensity of liking or disliking (e.g., "most disliked sensation imaginable"=0, "neutral" = 50, and "most liked sensation imaginable"=100) and aim to provide ratio-level data, meaning that the differences between scale points are meaningful and proportional. the LHS was comprised of 4 questions asking participants to indicate the e-cigarette's overall flavor sensation, harshness, throat hit, and warmth of the vapor. The score for each of the questions was summed. A higher score would indicate a more liked overall vaping experience; a lower score would indicate a more disliked overall vaping experience

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Labeled Hedonic Scale Questionnaire (LHS)
Baseline
0 (LHS) total score
Standard Deviation 0
0 (LHS) total score
Standard Deviation 0
0 (LHS) total score
Standard Deviation 0
0 (LHS) total score
Standard Deviation 0
Labeled Hedonic Scale Questionnaire (LHS)
After e-cig use at 55 minutes
184 (LHS) total score
Standard Deviation 71
165 (LHS) total score
Standard Deviation 66
161 (LHS) total score
Standard Deviation 37
125 (LHS) total score
Standard Deviation 42
Labeled Hedonic Scale Questionnaire (LHS)
After e-cig use at 215 minutes
152 (LHS) total score
Standard Deviation 81
152 (LHS) total score
Standard Deviation 61
180 (LHS) total score
Standard Deviation 44
121 (LHS) total score
Standard Deviation 55

OTHER_PRE_SPECIFIED outcome

Timeframe: Administered at baseline, 55 minutes post-drinking (after first vape bout), and 215 minutes post-drinking (after second vape bout).

Population: Direct Effects of Vaping Questionnaire (DEPVQ) total score

Direct Effects of Vaping Questionnaire (DEVQ) is a 10-item Questionnaire that asks participants about their vaping experience (10 questions, each scored from 0 - 100). While subscale scores are often the primary focus, an overall score may be calculated by summing all item scores or averaging them. The score for each of the questions was summed. A higher score indicates the e-cigarette evoked greater subjective effects or feelings.

Outcome measures

Outcome measures
Measure
Active Drink: Placebo Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol
Active Drink: Active Vape
n=7 Participants
Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol
Placebo Drink: Placebo Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid without ethanol
Placebo Drink: Active Vape
n=7 Participants
Beverage without ethanol and E-cigarette liquid with 20% ethanol
Direct Effects of Vaping Questionnaire (DEPVQ)
After e-cig use at 55 minutes
289 (DEPVQ) total score
Standard Deviation 183
309 (DEPVQ) total score
Standard Deviation 136
320 (DEPVQ) total score
Standard Deviation 132
259 (DEPVQ) total score
Standard Deviation 151
Direct Effects of Vaping Questionnaire (DEPVQ)
After e-cig use at 215 minutes
259 (DEPVQ) total score
Standard Deviation 112
243 (DEPVQ) total score
Standard Deviation 128
255 (DEPVQ) total score
Standard Deviation 117
205 (DEPVQ) total score
Standard Deviation 108
Direct Effects of Vaping Questionnaire (DEPVQ)
Baseline
0 (DEPVQ) total score
Standard Deviation 0
0 (DEPVQ) total score
Standard Deviation 0
0 (DEPVQ) total score
Standard Deviation 0
0 (DEPVQ) total score
Standard Deviation 0

Adverse Events

Within Group Four Condition Comparison

Serious events: 0 serious events
Other events: 2 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure
Within Group Four Condition Comparison
n=7 participants at risk
Participants completed four \~5-hour, Latin-square ordered sessions separated by ≥48 hours. Session order was not recorded as it was not relevant to the study outcomes. Session interventions were as follows: * Placebo drink: Placebo vape (Beverage without ethanol and E-cigarette liquid without ethanol) * Placebo drink: Active vape (Beverage without ethanol and E-cigarette liquid with 20% ethanol) * Active drink: Placebo vape (Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid without ethanol) * Active drink: Active vape (Beverage with 50% ethanol (dosed to have the participant reach a 0.08% BAC) and E-cigarette liquid with 20% ethanol)
Injury, poisoning and procedural complications
nausea
28.6%
2/7 • Number of events 2 • From baseline to session completion, approximately 7 hours for each session. On average, participants completed all 4 sessions within 1 month.

Additional Information

Michelle Peace, PhD

Virginia Commonwealth University

Phone: 804-828-8240

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place