Trial Outcomes & Findings for Neuroimaging Reward, Behavioral Treatment, and Smoking Cessation (NCT NCT02927847)

NCT ID: NCT02927847

Last Updated: 2022-06-28

Results Overview

Effects of BA+VLNC (vs. VLNC Only) on pre-quit changes in fMRI BOLD response to monetary reward anticipation. BOLD signal change is estimated from the contrast of monetary reward anticipation vs neutral anticipation, and extracted from voxels within the ventral striatum at each time point.

Recruitment status

COMPLETED

Study phase

PHASE1/PHASE2

Target enrollment

35 participants

Primary outcome timeframe

baseline, week 5

Results posted on

2022-06-28

Participant Flow

Participant milestones

Participant milestones
Measure
BA (Behavioral Activation) + VLNC (Very Low Nicotine Cigarettes)
Participants will receive Nicotine Patch, SPECTRUM Nicotine Research Cigarettes (.03), and behavioral treatment prior to quit attempt, followed by standard nicotine replacement therapy with Nicotine Patch during the quit attempt. Behavioral treatments in this condition will include standard smoking cessation counseling plus behavioral activation therapy aimed at increasing reinforcement from non-drug rewards. Nicotine Patch: Both groups will receive nicotine patches (21 mg/d) to wear for 1 month prior to the quit date. After the quit date, both groups will wear the nicotine patch for 8 weeks (21 mg/d for 4 weeks, 14 mg/d for 2 weeks, and 7 mg/d for 2 weeks). SPECTRUM Nicotine Research Cigarettes (.03 mg): For 1 month prior to their quit date, participants will switch to smoking SPECTRUM Nicotine Research Cigarettes instead of their usual brand. Behavioral Activation: Participants in the BA+VLNC group will undergo 8 60-minute behavioral sessions (4 pre-quit, 1 on quit day, and 3 post-quit) including 15 min of standard smoking cessation counseling and 45 minutes of behavioral activation treatment. BA components will include activity monitoring, values assessment, activity scheduling, and social contracts.
VLNC (Very Low Nicotine Cigarettes) Only
Participants will receive Nicotine Patch, SPECTRUM Nicotine Research Cigarettes (.03), and behavioral treatment prior to quit attempt, followed by standard nicotine replacement therapy with Nicotine Patch during quit attempt. Behavioral treatments in this condition will include standard smoking cessation counseling plus supportive counseling and health education. Nicotine Patch: Both groups will receive nicotine patches (21 mg/d) to wear for 1 month prior to the quit date. After the quit date, both groups will wear the nicotine patch for 8 weeks (21 mg/d for 4 weeks, 14 mg/d for 2 weeks, and 7 mg/d for 2 weeks). SPECTRUM Nicotine Research Cigarettes (.03 mg): For 1 month prior to their quit date, participants will switch to smoking SPECTRUM Nicotine Research Cigarettes instead of their usual brand. Supportive Counseling: Participants in the VLNC Only group will undergo 8 60-minute behavioral sessions (4 pre-quit, 1 on quit day, and 3 post-quit) including 15 min of standard smoking cessation counseling and 45 minutes of supportive counseling and health education. Supportive counseling and health education will include empathic listening as well as informational content on topics of exercise, nutrition, sleep and relaxation.
Overall Study
STARTED
16
19
Overall Study
COMPLETED
10
16
Overall Study
NOT COMPLETED
6
3

Reasons for withdrawal

Reasons for withdrawal
Measure
BA (Behavioral Activation) + VLNC (Very Low Nicotine Cigarettes)
Participants will receive Nicotine Patch, SPECTRUM Nicotine Research Cigarettes (.03), and behavioral treatment prior to quit attempt, followed by standard nicotine replacement therapy with Nicotine Patch during the quit attempt. Behavioral treatments in this condition will include standard smoking cessation counseling plus behavioral activation therapy aimed at increasing reinforcement from non-drug rewards. Nicotine Patch: Both groups will receive nicotine patches (21 mg/d) to wear for 1 month prior to the quit date. After the quit date, both groups will wear the nicotine patch for 8 weeks (21 mg/d for 4 weeks, 14 mg/d for 2 weeks, and 7 mg/d for 2 weeks). SPECTRUM Nicotine Research Cigarettes (.03 mg): For 1 month prior to their quit date, participants will switch to smoking SPECTRUM Nicotine Research Cigarettes instead of their usual brand. Behavioral Activation: Participants in the BA+VLNC group will undergo 8 60-minute behavioral sessions (4 pre-quit, 1 on quit day, and 3 post-quit) including 15 min of standard smoking cessation counseling and 45 minutes of behavioral activation treatment. BA components will include activity monitoring, values assessment, activity scheduling, and social contracts.
VLNC (Very Low Nicotine Cigarettes) Only
Participants will receive Nicotine Patch, SPECTRUM Nicotine Research Cigarettes (.03), and behavioral treatment prior to quit attempt, followed by standard nicotine replacement therapy with Nicotine Patch during quit attempt. Behavioral treatments in this condition will include standard smoking cessation counseling plus supportive counseling and health education. Nicotine Patch: Both groups will receive nicotine patches (21 mg/d) to wear for 1 month prior to the quit date. After the quit date, both groups will wear the nicotine patch for 8 weeks (21 mg/d for 4 weeks, 14 mg/d for 2 weeks, and 7 mg/d for 2 weeks). SPECTRUM Nicotine Research Cigarettes (.03 mg): For 1 month prior to their quit date, participants will switch to smoking SPECTRUM Nicotine Research Cigarettes instead of their usual brand. Supportive Counseling: Participants in the VLNC Only group will undergo 8 60-minute behavioral sessions (4 pre-quit, 1 on quit day, and 3 post-quit) including 15 min of standard smoking cessation counseling and 45 minutes of supportive counseling and health education. Supportive counseling and health education will include empathic listening as well as informational content on topics of exercise, nutrition, sleep and relaxation.
Overall Study
Lost to Follow-up
1
0
Overall Study
Withdrawal by Subject
4
2
Overall Study
PI withdrawn due to missed visits
1
1

Baseline Characteristics

Neuroimaging Reward, Behavioral Treatment, and Smoking Cessation

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
BA (Behavioral Activation) + VLNC (Very Low Nicotine Cigarettes)
n=16 Participants
Participants will receive Nicotine Patch, SPECTRUM Nicotine Research Cigarettes (.03), and behavioral treatment prior to quit attempt, followed by standard nicotine replacement therapy with Nicotine Patch during the quit attempt. Behavioral treatments in this condition will include standard smoking cessation counseling plus behavioral activation therapy aimed at increasing reinforcement from non-drug rewards. Nicotine Patch: Both groups will receive nicotine patches (21 mg/d) to wear for 1 month prior to the quit date. After the quit date, both groups will wear the nicotine patch for 8 weeks (21 mg/d for 4 weeks, 14 mg/d for 2 weeks, and 7 mg/d for 2 weeks). SPECTRUM Nicotine Research Cigarettes (.03 mg): For 1 month prior to their quit date, participants will switch to smoking SPECTRUM Nicotine Research Cigarettes instead of their usual brand. Behavioral Activation: Participants in the BA+VLNC group will undergo 8 60-minute behavioral sessions (4 pre-quit, 1 on quit day, and 3 post-quit) including 15 min of standard smoking cessation counseling and 45 minutes of behavioral activation treatment. BA components will include activity monitoring, values assessment, activity scheduling, and social contracts.
VLNC (Very Low Nicotine Cigarettes) Only
n=19 Participants
Participants will receive Nicotine Patch, SPECTRUM Nicotine Research Cigarettes (.03), and behavioral treatment prior to quit attempt, followed by standard nicotine replacement therapy with Nicotine Patch during quit attempt. Behavioral treatments in this condition will include standard smoking cessation counseling plus supportive counseling and health education. Nicotine Patch: Both groups will receive nicotine patches (21 mg/d) to wear for 1 month prior to the quit date. After the quit date, both groups will wear the nicotine patch for 8 weeks (21 mg/d for 4 weeks, 14 mg/d for 2 weeks, and 7 mg/d for 2 weeks). SPECTRUM Nicotine Research Cigarettes (.03 mg): For 1 month prior to their quit date, participants will switch to smoking SPECTRUM Nicotine Research Cigarettes instead of their usual brand. Supportive Counseling: Participants in the VLNC Only group will undergo 8 60-minute behavioral sessions (4 pre-quit, 1 on quit day, and 3 post-quit) including 15 min of standard smoking cessation counseling and 45 minutes of supportive counseling and health education. Supportive counseling and health education will include empathic listening as well as informational content on topics of exercise, nutrition, sleep and relaxation.
Total
n=35 Participants
Total of all reporting groups
Age, Continuous
38.2 years
STANDARD_DEVIATION 10.3 • n=5 Participants
37.6 years
STANDARD_DEVIATION 8.5 • n=7 Participants
37.9 years
STANDARD_DEVIATION 9.2 • n=5 Participants
Sex: Female, Male
Female
9 Participants
n=5 Participants
12 Participants
n=7 Participants
21 Participants
n=5 Participants
Sex: Female, Male
Male
7 Participants
n=5 Participants
7 Participants
n=7 Participants
14 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
2 Participants
n=5 Participants
2 Participants
n=7 Participants
4 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
14 Participants
n=5 Participants
16 Participants
n=7 Participants
30 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
1 Participants
n=7 Participants
1 Participants
n=5 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Asian
1 Participants
n=5 Participants
0 Participants
n=7 Participants
1 Participants
n=5 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Black or African American
5 Participants
n=5 Participants
3 Participants
n=7 Participants
8 Participants
n=5 Participants
Race (NIH/OMB)
White
9 Participants
n=5 Participants
13 Participants
n=7 Participants
22 Participants
n=5 Participants
Race (NIH/OMB)
More than one race
1 Participants
n=5 Participants
3 Participants
n=7 Participants
4 Participants
n=5 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Region of Enrollment
United States
16 Participants
n=5 Participants
19 Participants
n=7 Participants
35 Participants
n=5 Participants

PRIMARY outcome

Timeframe: baseline, week 5

Population: Participants without good fMRI data at baseline or week 5 (due to missed session, signal dropout, or artifacts) are not included in analyses.

Effects of BA+VLNC (vs. VLNC Only) on pre-quit changes in fMRI BOLD response to monetary reward anticipation. BOLD signal change is estimated from the contrast of monetary reward anticipation vs neutral anticipation, and extracted from voxels within the ventral striatum at each time point.

Outcome measures

Outcome measures
Measure
BA (Behavioral Activation) + VLNC (Very Low Nicotine Cigarettes)
n=10 Participants
Participants will receive Nicotine Patch, SPECTRUM Nicotine Research Cigarettes (.03), and behavioral treatment prior to quit attempt, followed by standard nicotine replacement therapy with Nicotine Patch during the quit attempt. Behavioral treatments in this condition will include standard smoking cessation counseling plus behavioral activation therapy aimed at increasing reinforcement from non-drug rewards. Nicotine Patch: Both groups will receive nicotine patches (21 mg/d) to wear for 1 month prior to the quit date. After the quit date, both groups will wear the nicotine patch for 8 weeks (21 mg/d for 4 weeks, 14 mg/d for 2 weeks, and 7 mg/d for 2 weeks). SPECTRUM Nicotine Research Cigarettes (.03 mg): For 1 month prior to their quit date, participants will switch to smoking SPECTRUM Nicotine Research Cigarettes instead of their usual brand. Behavioral Activation: Participants in the BA+VLNC group will undergo 8 60-minute behavioral sessions (4 pre-quit, 1 on quit day, and 3 post-quit) including 15 min of standard smoking cessation counseling and 45 minutes of behavioral activation treatment. BA components will include activity monitoring, values assessment, activity scheduling, and social contracts.
VLNC (Very Low Nicotine Cigarettes) Only
n=14 Participants
Participants will receive Nicotine Patch, SPECTRUM Nicotine Research Cigarettes (.03), and behavioral treatment prior to quit attempt, followed by standard nicotine replacement therapy with Nicotine Patch during quit attempt. Behavioral treatments in this condition will include standard smoking cessation counseling plus supportive counseling and health education. Nicotine Patch: Both groups will receive nicotine patches (21 mg/d) to wear for 1 month prior to the quit date. After the quit date, both groups will wear the nicotine patch for 8 weeks (21 mg/d for 4 weeks, 14 mg/d for 2 weeks, and 7 mg/d for 2 weeks). SPECTRUM Nicotine Research Cigarettes (.03 mg): For 1 month prior to their quit date, participants will switch to smoking SPECTRUM Nicotine Research Cigarettes instead of their usual brand. Supportive Counseling: Participants in the VLNC Only group will undergo 8 60-minute behavioral sessions (4 pre-quit, 1 on quit day, and 3 post-quit) including 15 min of standard smoking cessation counseling and 45 minutes of supportive counseling and health education. Supportive counseling and health education will include empathic listening as well as informational content on topics of exercise, nutrition, sleep and relaxation.
Change in BOLD (Blood-oxygen-level-dependent) Response to Monetary Reward
-0.085 fMRI BOLD signal
Standard Deviation 0.21
-0.067 fMRI BOLD signal
Standard Deviation 0.36

PRIMARY outcome

Timeframe: baseline, week 5

Population: Participants without good fMRI data at baseline or week 5 (due to missed session, signal dropout, or artifacts) are not included in analyses.

Effects of BA+VLNC (vs. VLNC Only) on pre-quit changes in fMRI BOLD response to smoking reward anticipation. BOLD signal change is estimated from the contrast of smoking reward anticipation vs neutral anticipation, and extracted from voxels within the ventral striatum at each time point.

Outcome measures

Outcome measures
Measure
BA (Behavioral Activation) + VLNC (Very Low Nicotine Cigarettes)
n=10 Participants
Participants will receive Nicotine Patch, SPECTRUM Nicotine Research Cigarettes (.03), and behavioral treatment prior to quit attempt, followed by standard nicotine replacement therapy with Nicotine Patch during the quit attempt. Behavioral treatments in this condition will include standard smoking cessation counseling plus behavioral activation therapy aimed at increasing reinforcement from non-drug rewards. Nicotine Patch: Both groups will receive nicotine patches (21 mg/d) to wear for 1 month prior to the quit date. After the quit date, both groups will wear the nicotine patch for 8 weeks (21 mg/d for 4 weeks, 14 mg/d for 2 weeks, and 7 mg/d for 2 weeks). SPECTRUM Nicotine Research Cigarettes (.03 mg): For 1 month prior to their quit date, participants will switch to smoking SPECTRUM Nicotine Research Cigarettes instead of their usual brand. Behavioral Activation: Participants in the BA+VLNC group will undergo 8 60-minute behavioral sessions (4 pre-quit, 1 on quit day, and 3 post-quit) including 15 min of standard smoking cessation counseling and 45 minutes of behavioral activation treatment. BA components will include activity monitoring, values assessment, activity scheduling, and social contracts.
VLNC (Very Low Nicotine Cigarettes) Only
n=14 Participants
Participants will receive Nicotine Patch, SPECTRUM Nicotine Research Cigarettes (.03), and behavioral treatment prior to quit attempt, followed by standard nicotine replacement therapy with Nicotine Patch during quit attempt. Behavioral treatments in this condition will include standard smoking cessation counseling plus supportive counseling and health education. Nicotine Patch: Both groups will receive nicotine patches (21 mg/d) to wear for 1 month prior to the quit date. After the quit date, both groups will wear the nicotine patch for 8 weeks (21 mg/d for 4 weeks, 14 mg/d for 2 weeks, and 7 mg/d for 2 weeks). SPECTRUM Nicotine Research Cigarettes (.03 mg): For 1 month prior to their quit date, participants will switch to smoking SPECTRUM Nicotine Research Cigarettes instead of their usual brand. Supportive Counseling: Participants in the VLNC Only group will undergo 8 60-minute behavioral sessions (4 pre-quit, 1 on quit day, and 3 post-quit) including 15 min of standard smoking cessation counseling and 45 minutes of supportive counseling and health education. Supportive counseling and health education will include empathic listening as well as informational content on topics of exercise, nutrition, sleep and relaxation.
Change in BOLD (Blood-oxygen-level-dependent) Response to Smoking Reward
0.011 fMRI BOLD signal
Standard Deviation 0.157
-0.036 fMRI BOLD signal
Standard Deviation 0.226

PRIMARY outcome

Timeframe: weeks 6 to 13

Relapse is defined as return to 7 consecutive days of smoking.

Outcome measures

Outcome measures
Measure
BA (Behavioral Activation) + VLNC (Very Low Nicotine Cigarettes)
n=16 Participants
Participants will receive Nicotine Patch, SPECTRUM Nicotine Research Cigarettes (.03), and behavioral treatment prior to quit attempt, followed by standard nicotine replacement therapy with Nicotine Patch during the quit attempt. Behavioral treatments in this condition will include standard smoking cessation counseling plus behavioral activation therapy aimed at increasing reinforcement from non-drug rewards. Nicotine Patch: Both groups will receive nicotine patches (21 mg/d) to wear for 1 month prior to the quit date. After the quit date, both groups will wear the nicotine patch for 8 weeks (21 mg/d for 4 weeks, 14 mg/d for 2 weeks, and 7 mg/d for 2 weeks). SPECTRUM Nicotine Research Cigarettes (.03 mg): For 1 month prior to their quit date, participants will switch to smoking SPECTRUM Nicotine Research Cigarettes instead of their usual brand. Behavioral Activation: Participants in the BA+VLNC group will undergo 8 60-minute behavioral sessions (4 pre-quit, 1 on quit day, and 3 post-quit) including 15 min of standard smoking cessation counseling and 45 minutes of behavioral activation treatment. BA components will include activity monitoring, values assessment, activity scheduling, and social contracts.
VLNC (Very Low Nicotine Cigarettes) Only
n=19 Participants
Participants will receive Nicotine Patch, SPECTRUM Nicotine Research Cigarettes (.03), and behavioral treatment prior to quit attempt, followed by standard nicotine replacement therapy with Nicotine Patch during quit attempt. Behavioral treatments in this condition will include standard smoking cessation counseling plus supportive counseling and health education. Nicotine Patch: Both groups will receive nicotine patches (21 mg/d) to wear for 1 month prior to the quit date. After the quit date, both groups will wear the nicotine patch for 8 weeks (21 mg/d for 4 weeks, 14 mg/d for 2 weeks, and 7 mg/d for 2 weeks). SPECTRUM Nicotine Research Cigarettes (.03 mg): For 1 month prior to their quit date, participants will switch to smoking SPECTRUM Nicotine Research Cigarettes instead of their usual brand. Supportive Counseling: Participants in the VLNC Only group will undergo 8 60-minute behavioral sessions (4 pre-quit, 1 on quit day, and 3 post-quit) including 15 min of standard smoking cessation counseling and 45 minutes of supportive counseling and health education. Supportive counseling and health education will include empathic listening as well as informational content on topics of exercise, nutrition, sleep and relaxation.
Number of Participants Who Relapsed or Are Presumed to Have Relapsed
9 Participants
9 Participants

Adverse Events

BA (Behavioral Activation) + VLNC (Very Low Nicotine Cigarettes)

Serious events: 0 serious events
Other events: 13 other events
Deaths: 0 deaths

VLNC (Very Low Nicotine Cigarettes) Only

Serious events: 0 serious events
Other events: 16 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure
BA (Behavioral Activation) + VLNC (Very Low Nicotine Cigarettes)
n=16 participants at risk
Participants will receive Nicotine Patch, SPECTRUM Nicotine Research Cigarettes (.03), and behavioral treatment prior to quit attempt, followed by standard nicotine replacement therapy with Nicotine Patch during the quit attempt. Behavioral treatments in this condition will include standard smoking cessation counseling plus behavioral activation therapy aimed at increasing reinforcement from non-drug rewards. Nicotine Patch: Both groups will receive nicotine patches (21 mg/d) to wear for 1 month prior to the quit date. After the quit date, both groups will wear the nicotine patch for 8 weeks (21 mg/d for 4 weeks, 14 mg/d for 2 weeks, and 7 mg/d for 2 weeks). SPECTRUM Nicotine Research Cigarettes (.03 mg): For 1 month prior to their quit date, participants will switch to smoking SPECTRUM Nicotine Research Cigarettes instead of their usual brand. Behavioral Activation: Participants in the BA+VLNC group will undergo 8 60-minute behavioral sessions (4 pre-quit, 1 on quit day, and 3 post-quit) including 15 min of standard smoking cessation counseling and 45 minutes of behavioral activation treatment. BA components will include activity monitoring, values assessment, activity scheduling, and social contracts.
VLNC (Very Low Nicotine Cigarettes) Only
n=19 participants at risk
Participants will receive Nicotine Patch, SPECTRUM Nicotine Research Cigarettes (.03), and behavioral treatment prior to quit attempt, followed by standard nicotine replacement therapy with Nicotine Patch during quit attempt. Behavioral treatments in this condition will include standard smoking cessation counseling plus supportive counseling and health education. Nicotine Patch: Both groups will receive nicotine patches (21 mg/d) to wear for 1 month prior to the quit date. After the quit date, both groups will wear the nicotine patch for 8 weeks (21 mg/d for 4 weeks, 14 mg/d for 2 weeks, and 7 mg/d for 2 weeks). SPECTRUM Nicotine Research Cigarettes (.03 mg): For 1 month prior to their quit date, participants will switch to smoking SPECTRUM Nicotine Research Cigarettes instead of their usual brand. Supportive Counseling: Participants in the VLNC Only group will undergo 8 60-minute behavioral sessions (4 pre-quit, 1 on quit day, and 3 post-quit) including 15 min of standard smoking cessation counseling and 45 minutes of supportive counseling and health education. Supportive counseling and health education will include empathic listening as well as informational content on topics of exercise, nutrition, sleep and relaxation.
Skin and subcutaneous tissue disorders
Itchiness at patch site
25.0%
4/16 • Week 1 to week 13
26.3%
5/19 • Week 1 to week 13
Skin and subcutaneous tissue disorders
Rash
6.2%
1/16 • Week 1 to week 13
10.5%
2/19 • Week 1 to week 13
Respiratory, thoracic and mediastinal disorders
Cold/upper respiratory infection
25.0%
4/16 • Week 1 to week 13
21.1%
4/19 • Week 1 to week 13
Respiratory, thoracic and mediastinal disorders
Cough
18.8%
3/16 • Week 1 to week 13
26.3%
5/19 • Week 1 to week 13
Infections and infestations
Fever
0.00%
0/16 • Week 1 to week 13
5.3%
1/19 • Week 1 to week 13
Respiratory, thoracic and mediastinal disorders
Runny nose/congestion
6.2%
1/16 • Week 1 to week 13
10.5%
2/19 • Week 1 to week 13
Respiratory, thoracic and mediastinal disorders
Increased phlegm
6.2%
1/16 • Week 1 to week 13
0.00%
0/19 • Week 1 to week 13
Respiratory, thoracic and mediastinal disorders
Loss of voice
6.2%
1/16 • Week 1 to week 13
0.00%
0/19 • Week 1 to week 13
Respiratory, thoracic and mediastinal disorders
Mouth/throat irritaiton
12.5%
2/16 • Week 1 to week 13
26.3%
5/19 • Week 1 to week 13
Gastrointestinal disorders
Heart burn
12.5%
2/16 • Week 1 to week 13
5.3%
1/19 • Week 1 to week 13
Gastrointestinal disorders
Hunger
0.00%
0/16 • Week 1 to week 13
5.3%
1/19 • Week 1 to week 13
Gastrointestinal disorders
Diarrhea
6.2%
1/16 • Week 1 to week 13
0.00%
0/19 • Week 1 to week 13
Gastrointestinal disorders
Stomach bug
18.8%
3/16 • Week 1 to week 13
5.3%
1/19 • Week 1 to week 13
Gastrointestinal disorders
Upset stomach/nausea
6.2%
1/16 • Week 1 to week 13
5.3%
1/19 • Week 1 to week 13
Gastrointestinal disorders
Vomiting
6.2%
1/16 • Week 1 to week 13
5.3%
1/19 • Week 1 to week 13
Nervous system disorders
Headache
18.8%
3/16 • Week 1 to week 13
15.8%
3/19 • Week 1 to week 13
Nervous system disorders
Phantom Limb
6.2%
1/16 • Week 1 to week 13
0.00%
0/19 • Week 1 to week 13
Nervous system disorders
Heat sensitivity in extremeties
6.2%
1/16 • Week 1 to week 13
0.00%
0/19 • Week 1 to week 13
Musculoskeletal and connective tissue disorders
Tightness in lower back
6.2%
1/16 • Week 1 to week 13
0.00%
0/19 • Week 1 to week 13
Musculoskeletal and connective tissue disorders
Hip pain
6.2%
1/16 • Week 1 to week 13
0.00%
0/19 • Week 1 to week 13
Musculoskeletal and connective tissue disorders
Muscle spasm
0.00%
0/16 • Week 1 to week 13
5.3%
1/19 • Week 1 to week 13
Musculoskeletal and connective tissue disorders
Arthritis/joint pain
0.00%
0/16 • Week 1 to week 13
10.5%
2/19 • Week 1 to week 13
Social circumstances
Stress
12.5%
2/16 • Week 1 to week 13
5.3%
1/19 • Week 1 to week 13
General disorders
Vivid or abnormal dreams
31.2%
5/16 • Week 1 to week 13
26.3%
5/19 • Week 1 to week 13
General disorders
Insomnia
12.5%
2/16 • Week 1 to week 13
15.8%
3/19 • Week 1 to week 13
General disorders
Sleep issues
6.2%
1/16 • Week 1 to week 13
0.00%
0/19 • Week 1 to week 13
General disorders
Sedation
0.00%
0/16 • Week 1 to week 13
5.3%
1/19 • Week 1 to week 13
General disorders
Nicotine withdrawal
6.2%
1/16 • Week 1 to week 13
0.00%
0/19 • Week 1 to week 13
Psychiatric disorders
Irritability
37.5%
6/16 • Week 1 to week 13
26.3%
5/19 • Week 1 to week 13
Psychiatric disorders
Jitteriness
6.2%
1/16 • Week 1 to week 13
0.00%
0/19 • Week 1 to week 13
Psychiatric disorders
Sadness
0.00%
0/16 • Week 1 to week 13
5.3%
1/19 • Week 1 to week 13
Psychiatric disorders
Suicidal ideation
0.00%
0/16 • Week 1 to week 13
5.3%
1/19 • Week 1 to week 13
Immune system disorders
Allergies/hay fever
6.2%
1/16 • Week 1 to week 13
10.5%
2/19 • Week 1 to week 13
Immune system disorders
Food allergy
6.2%
1/16 • Week 1 to week 13
0.00%
0/19 • Week 1 to week 13
Injury, poisoning and procedural complications
Car accident
6.2%
1/16 • Week 1 to week 13
0.00%
0/19 • Week 1 to week 13
Injury, poisoning and procedural complications
Cut finger/hand
0.00%
0/16 • Week 1 to week 13
10.5%
2/19 • Week 1 to week 13
Injury, poisoning and procedural complications
Poison ivy
6.2%
1/16 • Week 1 to week 13
0.00%
0/19 • Week 1 to week 13
Surgical and medical procedures
Root canal
6.2%
1/16 • Week 1 to week 13
0.00%
0/19 • Week 1 to week 13

Additional Information

Maggie M Sweitzer, PhD

Duke University

Phone: 919-668-0094

Results disclosure agreements

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