Trial Outcomes & Findings for Effects of Tobacco Flavoring and Liquid Composition on Vaping Topography (NCT NCT05876091)

NCT ID: NCT05876091

Last Updated: 2025-12-22

Results Overview

Measure of vaping topography counting total number of puffs.

Recruitment status

TERMINATED

Study phase

NA

Target enrollment

21 participants

Primary outcome timeframe

Single Session, Approximately 2 hours in duration

Results posted on

2025-12-22

Participant Flow

Participant milestones

Participant milestones
Measure
Overall Study Population
SESSION 1: Participants puff their own brand liquid on study. SESSIONS 2-5: Participants puff 1 of 4 randomly assigned tobacco flavor formulations at each visit on study. SESSIONS 6-7: Participants puff 1 of 2 randomly assigned nicotine formulations at each visit on study.
Session 1: Own Brand Topography
STARTED
18
Session 1: Own Brand Topography
Own Brand Directed Vaping
18
Session 1: Own Brand Topography
Own Brand Ad Lib Vaping
18
Session 1: Own Brand Topography
COMPLETED
18
Session 1: Own Brand Topography
NOT COMPLETED
0
Sessions 2-5: Tobacco Flavors
STARTED
18
Sessions 2-5: Tobacco Flavors
Cowboy Liquid Ad Lib
17
Sessions 2-5: Tobacco Flavors
Cowboy Liquid Directed
17
Sessions 2-5: Tobacco Flavors
RY4 Liquid Ad Lib
17
Sessions 2-5: Tobacco Flavors
RY4 Liquid Directed
17
Sessions 2-5: Tobacco Flavors
Red Oak Liquid Ad Lib
17
Sessions 2-5: Tobacco Flavors
Red Oak Liquid Directed
17
Sessions 2-5: Tobacco Flavors
Unflavored Liquid Ad Lib
17
Sessions 2-5: Tobacco Flavors
Unflavored Liquid Directed
17
Sessions 2-5: Tobacco Flavors
COMPLETED
17
Sessions 2-5: Tobacco Flavors
NOT COMPLETED
1
Sessions 6-7: Nicotine Formulations
STARTED
17
Sessions 6-7: Nicotine Formulations
Synthetic Liquid Ad Lib
17
Sessions 6-7: Nicotine Formulations
Synthetic Liquid Directed
17
Sessions 6-7: Nicotine Formulations
Tobacco Derived Liquid Ad Lib
17
Sessions 6-7: Nicotine Formulations
Tobacco Derived Liquid Directed
17
Sessions 6-7: Nicotine Formulations
COMPLETED
17
Sessions 6-7: Nicotine Formulations
NOT COMPLETED
0

Reasons for withdrawal

Reasons for withdrawal
Measure
Overall Study Population
SESSION 1: Participants puff their own brand liquid on study. SESSIONS 2-5: Participants puff 1 of 4 randomly assigned tobacco flavor formulations at each visit on study. SESSIONS 6-7: Participants puff 1 of 2 randomly assigned nicotine formulations at each visit on study.
Sessions 2-5: Tobacco Flavors
Lost to Follow-up
1

Baseline Characteristics

Effects of Tobacco Flavoring and Liquid Composition on Vaping Topography

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Vaping -
n=18 Participants
Description The order of directed and ad libitum bouts are randomized within participants at each session. SESSION 1: Participants puff their own brand liquid on study. SESSIONS 2-5: Participants puff 1 of 4 randomly assigned tobacco flavor formulations at each visit on study. SESSIONS 6-7: Participants puff 1 of 2 randomly assigned nicotine formulations at each visit on study. Participants also undergo collection of saliva samples and optionally undergo collection of oral cell and oral rinse samples throughout study. Vaping: Undergo vape puffing regimen Biospecimen Collection: Undergo collection of saliva samples and oral cell samples Questionnaire Administration: Administer Quesitonnaire
Age, Continuous
35.8 years
STANDARD_DEVIATION 10.76 • n=18 Participants
Sex: Female, Male
Female
11 Participants
n=18 Participants
Sex: Female, Male
Male
7 Participants
n=18 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants
n=18 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
17 Participants
n=18 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=18 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=18 Participants
Race (NIH/OMB)
Asian
3 Participants
n=18 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=18 Participants
Race (NIH/OMB)
Black or African American
5 Participants
n=18 Participants
Race (NIH/OMB)
White
7 Participants
n=18 Participants
Race (NIH/OMB)
More than one race
1 Participants
n=18 Participants
Race (NIH/OMB)
Unknown or Not Reported
2 Participants
n=18 Participants
Region of Enrollment
United States
18 participants
n=18 Participants

PRIMARY outcome

Timeframe: Single Session, Approximately 2 hours in duration

Measure of vaping topography counting total number of puffs.

Outcome measures

Outcome measures
Measure
Sessions 2-5: Unflavored Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Unflavored vaping liquid
Sessions 2-5: Red Oak Vaping Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Red Oak vaping liquid
Sessions 2-5: Red Oak Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Red Oak vaping liquid
Session 6-7: Synthetic Nicotine Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Synthetic vaping liquid
Session 6-7: Synthetic Nicotine Liquid Puff Count Directed
n=17 Participants
Mean directed ad lib puff count: Synthetic vaping liquid
Session 6-7: Tobacco Derived Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Tobacco Derived vaping liquid
Session 6-7: Tobacco Derived Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Tobacco Derived vaping liquid
Session 1: Own Brand Puff Duration Ad Lib
n=18 Participants
Mean ad lib puff duration: Own Brand
Session 1: Own Brand Puff Duration Directed
n=18 Participants
Mean directed puff duration: Own Brand
Sessions 2-5: Cowboy Vaping Liquid Puff Duration Ad Lib
n=17 Participants
Mean ad lib puff duration: Cowboy vaping liquid
Sessions 2-5: Cowboy Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Cowboy vaping liquid
Sessions 2-5: RY4 Double Vaping Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: RY4 Double Vaping Liquid
Sessions 2-5: RY4 Double Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: RY4 Double vaping liquid
Sessions 2-5: Unflavored Vaping Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Unflavored vaping liquid
Puff Topography: Puff Count
5.8 Number of Puffs
Standard Error 0.9
13.0 Number of Puffs
Standard Error 2.2
6.3 Number of Puffs
Standard Error 1.2
14.3 Number of Puffs
Standard Error 2.4
7.1 Number of Puffs
Standard Error 0.9
13.4 Number of Puffs
Standard Error 1.8
7.0 Number of Puffs
Standard Error 0.9
13.9 Number of Puffs
Standard Error 2.3
6.4 Number of Puffs
Standard Error 0.8
13.2 Number of Puffs
Standard Error 2.2
5.8 Number of Puffs
Standard Error 0.8
15.4 Number of Puffs
Standard Error 3.1
5.9 Number of Puffs
Standard Error 0.9
13.2 Number of Puffs
Standard Error 2.2

PRIMARY outcome

Timeframe: Single Session, Approximately 2 hours in duration

Measure of vaping topography counting duration of puffs in seconds.

Outcome measures

Outcome measures
Measure
Sessions 2-5: Unflavored Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Unflavored vaping liquid
Sessions 2-5: Red Oak Vaping Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Red Oak vaping liquid
Sessions 2-5: Red Oak Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Red Oak vaping liquid
Session 6-7: Synthetic Nicotine Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Synthetic vaping liquid
Session 6-7: Synthetic Nicotine Liquid Puff Count Directed
n=17 Participants
Mean directed ad lib puff count: Synthetic vaping liquid
Session 6-7: Tobacco Derived Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Tobacco Derived vaping liquid
Session 6-7: Tobacco Derived Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Tobacco Derived vaping liquid
Session 1: Own Brand Puff Duration Ad Lib
n=18 Participants
Mean ad lib puff duration: Own Brand
Session 1: Own Brand Puff Duration Directed
n=18 Participants
Mean directed puff duration: Own Brand
Sessions 2-5: Cowboy Vaping Liquid Puff Duration Ad Lib
n=17 Participants
Mean ad lib puff duration: Cowboy vaping liquid
Sessions 2-5: Cowboy Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Cowboy vaping liquid
Sessions 2-5: RY4 Double Vaping Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: RY4 Double Vaping Liquid
Sessions 2-5: RY4 Double Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: RY4 Double vaping liquid
Sessions 2-5: Unflavored Vaping Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Unflavored vaping liquid
Puff Topography: Puff Duration (in Seconds)
3.2 Mean Duration of Puffs (in seconds)
Standard Error 0.3
2.1 Mean Duration of Puffs (in seconds)
Standard Error 0.2
2.9 Mean Duration of Puffs (in seconds)
Standard Error 0.3
2.4 Mean Duration of Puffs (in seconds)
Standard Error 0.4
3.0 Mean Duration of Puffs (in seconds)
Standard Error 0.3
2.2 Mean Duration of Puffs (in seconds)
Standard Error 0.3
2.9 Mean Duration of Puffs (in seconds)
Standard Error 0.3
2.2 Mean Duration of Puffs (in seconds)
Standard Error 0.3
3.5 Mean Duration of Puffs (in seconds)
Standard Error 0.3
2.3 Mean Duration of Puffs (in seconds)
Standard Error 0.3
3.1 Mean Duration of Puffs (in seconds)
Standard Error 0.3
2.5 Mean Duration of Puffs (in seconds)
Standard Error 0.4
3.0 Mean Duration of Puffs (in seconds)
Standard Error 0.3
2.3 Mean Duration of Puffs (in seconds)
Standard Error 0.3

PRIMARY outcome

Timeframe: Single Session, Approximately 2 hours in duration

Measure of vaping topography counting the interval between puffs in seconds.

Outcome measures

Outcome measures
Measure
Sessions 2-5: Unflavored Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Unflavored vaping liquid
Sessions 2-5: Red Oak Vaping Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Red Oak vaping liquid
Sessions 2-5: Red Oak Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Red Oak vaping liquid
Session 6-7: Synthetic Nicotine Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Synthetic vaping liquid
Session 6-7: Synthetic Nicotine Liquid Puff Count Directed
n=17 Participants
Mean directed ad lib puff count: Synthetic vaping liquid
Session 6-7: Tobacco Derived Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Tobacco Derived vaping liquid
Session 6-7: Tobacco Derived Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Tobacco Derived vaping liquid
Session 1: Own Brand Puff Duration Ad Lib
n=18 Participants
Mean ad lib puff duration: Own Brand
Session 1: Own Brand Puff Duration Directed
n=18 Participants
Mean directed puff duration: Own Brand
Sessions 2-5: Cowboy Vaping Liquid Puff Duration Ad Lib
n=17 Participants
Mean ad lib puff duration: Cowboy vaping liquid
Sessions 2-5: Cowboy Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Cowboy vaping liquid
Sessions 2-5: RY4 Double Vaping Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: RY4 Double Vaping Liquid
Sessions 2-5: RY4 Double Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: RY4 Double vaping liquid
Sessions 2-5: Unflavored Vaping Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Unflavored vaping liquid
Puff Topography: Inter Puff Interval (IPI)
56.7 Mean number of seconds between puffs
Standard Error 4.0
55.1 Mean number of seconds between puffs
Standard Error 8.1
60.6 Mean number of seconds between puffs
Standard Error 5.4
84.6 Mean number of seconds between puffs
Standard Error 12.0
59.3 Mean number of seconds between puffs
Standard Error 4.1
78.7 Mean number of seconds between puffs
Standard Error 11.0
56.6 Mean number of seconds between puffs
Standard Error 3.5
82.2 Mean number of seconds between puffs
Standard Error 14.0
55.2 Mean number of seconds between puffs
Standard Error 6.1
61.4 Mean number of seconds between puffs
Standard Error 10.7
58.0 Mean number of seconds between puffs
Standard Error 4.2
71.6 Mean number of seconds between puffs
Standard Error 10.3
54.2 Mean number of seconds between puffs
Standard Error 3.6
71.6 Mean number of seconds between puffs
Standard Error 8.7

PRIMARY outcome

Timeframe: Single Session, Approximately 2 hours in duration

Measure of vaping topography measuring the volume per puff in ml.

Outcome measures

Outcome measures
Measure
Sessions 2-5: Unflavored Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Unflavored vaping liquid
Sessions 2-5: Red Oak Vaping Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Red Oak vaping liquid
Sessions 2-5: Red Oak Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Red Oak vaping liquid
Session 6-7: Synthetic Nicotine Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Synthetic vaping liquid
Session 6-7: Synthetic Nicotine Liquid Puff Count Directed
n=17 Participants
Mean directed ad lib puff count: Synthetic vaping liquid
Session 6-7: Tobacco Derived Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Tobacco Derived vaping liquid
Session 6-7: Tobacco Derived Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Tobacco Derived vaping liquid
Session 1: Own Brand Puff Duration Ad Lib
n=18 Participants
Mean ad lib puff duration: Own Brand
Session 1: Own Brand Puff Duration Directed
n=18 Participants
Mean directed puff duration: Own Brand
Sessions 2-5: Cowboy Vaping Liquid Puff Duration Ad Lib
n=17 Participants
Mean ad lib puff duration: Cowboy vaping liquid
Sessions 2-5: Cowboy Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Cowboy vaping liquid
Sessions 2-5: RY4 Double Vaping Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: RY4 Double Vaping Liquid
Sessions 2-5: RY4 Double Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: RY4 Double vaping liquid
Sessions 2-5: Unflavored Vaping Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Unflavored vaping liquid
Puff Topography: Puff Volume
88.3 Volume per puff (ml)
Standard Error 13.5
57.5 Volume per puff (ml)
Standard Error 6.5
74.9 Volume per puff (ml)
Standard Error 10.61
86.7 Volume per puff (ml)
Standard Error 14.9
96.3 Volume per puff (ml)
Standard Error 13.5
76.9 Volume per puff (ml)
Standard Error 9.8
92.0 Volume per puff (ml)
Standard Error 15.2
63.5 Volume per puff (ml)
Standard Error 13.2
102.2 Volume per puff (ml)
Standard Error 16.1
66.2 Volume per puff (ml)
Standard Error 11.4
81.4 Volume per puff (ml)
Standard Error 14.7
83.6 Volume per puff (ml)
Standard Error 17.2
103.1 Volume per puff (ml)
Standard Error 18.6
63.9 Volume per puff (ml)
Standard Error 8.1

PRIMARY outcome

Timeframe: Single Session, Approximately 2 hours in duration

Measure of vaping topography measuring the rate of flow per puff in milliliters per second.

Outcome measures

Outcome measures
Measure
Sessions 2-5: Unflavored Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Unflavored vaping liquid
Sessions 2-5: Red Oak Vaping Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Red Oak vaping liquid
Sessions 2-5: Red Oak Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Red Oak vaping liquid
Session 6-7: Synthetic Nicotine Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Synthetic vaping liquid
Session 6-7: Synthetic Nicotine Liquid Puff Count Directed
n=17 Participants
Mean directed ad lib puff count: Synthetic vaping liquid
Session 6-7: Tobacco Derived Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Tobacco Derived vaping liquid
Session 6-7: Tobacco Derived Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Tobacco Derived vaping liquid
Session 1: Own Brand Puff Duration Ad Lib
n=18 Participants
Mean ad lib puff duration: Own Brand
Session 1: Own Brand Puff Duration Directed
n=18 Participants
Mean directed puff duration: Own Brand
Sessions 2-5: Cowboy Vaping Liquid Puff Duration Ad Lib
n=17 Participants
Mean ad lib puff duration: Cowboy vaping liquid
Sessions 2-5: Cowboy Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Cowboy vaping liquid
Sessions 2-5: RY4 Double Vaping Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: RY4 Double Vaping Liquid
Sessions 2-5: RY4 Double Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: RY4 Double vaping liquid
Sessions 2-5: Unflavored Vaping Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Unflavored vaping liquid
Puff Topography: Flow Rate
25.2 ml per second
Standard Error 2.8
27.8 ml per second
Standard Error 2.4
24.2 ml per second
Standard Error 1.9
33.7 ml per second
Standard Error 2.1
31.4 ml per second
Standard Error 2.1
33.9 ml per second
Standard Error 2.6
30.0 ml per second
Standard Error 2.32
28.4 ml per second
Standard Error 3.4
28.7 ml per second
Standard Error 3.3
28.2 ml per second
Standard Error 2.3
25.5 ml per second
Standard Error 2.7
29.3 ml per second
Standard Error 2.4
24.8 ml per second
Standard Error 2.6
27.8 ml per second
Standard Error 2.9

SECONDARY outcome

Timeframe: Single Session, Approximately 2 hours in duration

Population: Mean sensory and subjective effects scores by bout type and flavor condition, Sub-Study A.

Will be assessed by Duke Sensory Scale

Outcome measures

Outcome measures
Measure
Sessions 2-5: Unflavored Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Unflavored vaping liquid
Sessions 2-5: Red Oak Vaping Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Red Oak vaping liquid
Sessions 2-5: Red Oak Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Red Oak vaping liquid
Session 6-7: Synthetic Nicotine Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Synthetic vaping liquid
Session 6-7: Synthetic Nicotine Liquid Puff Count Directed
n=17 Participants
Mean directed ad lib puff count: Synthetic vaping liquid
Session 6-7: Tobacco Derived Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Tobacco Derived vaping liquid
Session 6-7: Tobacco Derived Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Tobacco Derived vaping liquid
Session 1: Own Brand Puff Duration Ad Lib
n=18 Participants
Mean ad lib puff duration: Own Brand
Session 1: Own Brand Puff Duration Directed
n=18 Participants
Mean directed puff duration: Own Brand
Sessions 2-5: Cowboy Vaping Liquid Puff Duration Ad Lib
n=17 Participants
Mean ad lib puff duration: Cowboy vaping liquid
Sessions 2-5: Cowboy Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: Cowboy vaping liquid
Sessions 2-5: RY4 Double Vaping Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: RY4 Double Vaping Liquid
Sessions 2-5: RY4 Double Vaping Liquid Puff Count Directed
n=17 Participants
Mean directed puff count: RY4 Double vaping liquid
Sessions 2-5: Unflavored Vaping Liquid Puff Count Ad Lib
n=17 Participants
Mean ad lib puff count: Unflavored vaping liquid
Subjective Questionnaires of Product Evaluation
Draw (0 "less draw" - 100 "more draw)
75.5 units on a scale
Standard Error 4.2
68.8 units on a scale
Standard Error 5.0
72.5 units on a scale
Standard Error 4.7
71.9 units on a scale
Standard Error 5.0
74.2 units on a scale
Standard Error 5.3
66.2 units on a scale
Standard Error 6.6
74.1 units on a scale
Standard Error 5.2
72.3 units on a scale
Standard Error 7.3
77.0 units on a scale
Standard Error 5.7
69.7 units on a scale
Standard Error 4.4
64.1 units on a scale
Standard Error 5.6
61.1 units on a scale
Standard Error 6.5
71.6 units on a scale
Standard Error 4.5
72.9 units on a scale
Standard Error 4.7
Subjective Questionnaires of Product Evaluation
Pleasantness (-100 "less pleasant" - +100 "more pleasant")
37.7 units on a scale
Standard Error 15.7
-2.0 units on a scale
Standard Error 14.8
22.4 units on a scale
Standard Error 16.2
26.2 units on a scale
Standard Error 11.6
21.2 units on a scale
Standard Error 12.9
1.2 units on a scale
Standard Error 11.6
7.5 units on a scale
Standard Error 14.8
45.2 units on a scale
Standard Error 12.0
33.2 units on a scale
Standard Error 15.9
-3.2 units on a scale
Standard Error 15.3
-32.6 units on a scale
Standard Error 15.5
3.9 units on a scale
Standard Error 13.1
-2.5 units on a scale
Standard Error 13.3
16.4 units on a scale
Standard Error 15.2
Subjective Questionnaires of Product Evaluation
Tingling Sensation (0 "less tingling sensation" - 100 "more tingling sensation")
45.1 units on a scale
Standard Error 6.3
36.2 units on a scale
Standard Error 5.6
33.4 units on a scale
Standard Error 5.1
27.8 units on a scale
Standard Error 5.3
29.8 units on a scale
Standard Error 5.7
21.0 units on a scale
Standard Error 5.2
29.0 units on a scale
Standard Error 6.1
50.2 units on a scale
Standard Error 11.4
34.8 units on a scale
Standard Error 8.6
34.2 units on a scale
Standard Error 6.6
44.4 units on a scale
Standard Error 4.9
38.9 units on a scale
Standard Error 6.5
44.7 units on a scale
Standard Error 7.8
25.4 units on a scale
Standard Error 5.3
Subjective Questionnaires of Product Evaluation
Product Evaluation Score: Satisfaction (1 "not at all" - 7 "extremely")
3.4 units on a scale
Standard Error 0.4
3.1 units on a scale
Standard Error 0.4
2.9 units on a scale
Standard Error 0.4
3.4 units on a scale
Standard Error 0.3
3.4 units on a scale
Standard Error 0.3
3.1 units on a scale
Standard Error 0.3
3.2 units on a scale
Standard Error 0.3
4.8 units on a scale
Standard Error 0.4
4.2 units on a scale
Standard Error 0.4
2.8 units on a scale
Standard Error 0.3
2.6 units on a scale
Standard Error 0.4
2.7 units on a scale
Standard Error 0.3
3.0 units on a scale
Standard Error 0.4
3.1 units on a scale
Standard Error 0.4
Subjective Questionnaires of Product Evaluation
Product Evaluaton Sore: Relief (1 "not at all" - 7 "extremely")
4.1 units on a scale
Standard Error 0.3
4.5 units on a scale
Standard Error 0.3
4.5 units on a scale
Standard Error 0.3
4.8 units on a scale
Standard Error 0.3
4.7 units on a scale
Standard Error 0.4
4.4 units on a scale
Standard Error 0.3
4.6 units on a scale
Standard Error 0.3
5.3 units on a scale
Standard Error 0.4
4.7 units on a scale
Standard Error 0.6
3.9 units on a scale
Standard Error 0.3
4.4 units on a scale
Standard Error 0.3
4.0 units on a scale
Standard Error 0.3
4.2 units on a scale
Standard Error 0.3
4.3 units on a scale
Standard Error 0.3

Adverse Events

Session 1: Own Brand Topography Ad Lib

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

Session 1: Own Brand Topography Directed

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

Sessions 2-5: Cowboy Liquid Topography Ad Lib

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

Sessions 2-5: Cowboy Liquid Vaping Liquid Directed

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

Sessions 2-5: RY4 Vaping Liquid Topography Ad Lib

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

Sessions 2-5: RY4 Vaping Liquid Topography Directed

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

Sessions 2-5: Red Oak Vaping Liquid Topography Ad Lib

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

Sessions 2-5: Red Oak Vaping Liquid Topography Directed

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

Sessions 2-5: Unflavored Vaping Liquid Topography Ad Lib

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

Unflavored Vaping Liquid Vaping Topography Directed

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

Sessions 6-7: Synthetic Nicotine Vaping Liquid Topography Ad Lib

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

Sessions 6-7: Synthetic Vaping Liquid Topography Directed

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

Sessions 6-7: Tobacco Derived Vaping Liquid Topography Ad Lib

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

Sessions 6-7: Tobacco Derived Vaping Liquid Topography Directed

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

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

Brian Fix

Roswell Park Comprehensive Cancer Center

Phone: 716-845-2300

Results disclosure agreements

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