Trial Outcomes & Findings for Using Group Commitment for Smoking Cessation (NCT NCT01311115)
NCT ID: NCT01311115
Last Updated: 2022-09-15
Results Overview
7-day point prevalence of smoking abstinence measured 6 months after enrollment, using a NicCheck urine cotinine test. Participants who self-report having smoked in the last 7 days, as part of the follow-up survey, are considered to be continuing smokers.
Recruitment status
COMPLETED
Study phase
NA
Target enrollment
201 participants
Primary outcome timeframe
6 months after enrollment
Results posted on
2022-09-15
Participant Flow
Participant milestones
| Measure |
Group Commitment Contracts
The intervention includes the following components:
1. Education and counseling (same as control group): Participants receive educational pamphlets on reasons to quit smoking and strategies for quitting smoking. They also receive one-time, group counseling on quitting smoking from a nurse trained in smoking cessation counseling.
2. Each participant is required to deposit at least 50 baht at enrollment. A deposit collector visits each participant on a weekly basis and collects additional deposits on a voluntary basis. All deposits are returned only if the smoker quits successfully within three months.
3. The project gives a matching contribution of 150 baht for the initial deposit of at least 50 baht. All participants in the treatment group are further randomized to a one-month group and a three-month group. The one-month group receives an additional 150 baht of project funds if they deposit 100 baht of their money within one month of enrollment. The three-month group receives 150 baht for depositing 100 baht within three months of enrollment.
4. Each participant is paired with another study participant at enrollment. If both quit, each receives a cash bonus of 1,200 baht. At enrollment, pairs receive brief counseling on ways to support each other during the quit attempt.
|
Education and Counseling
Participants in this group receive educational pamphlets about quitting smoking and one-time, group counseling from a nurse trained in smoking cessation counseling.
Smoking cessation education and counseling: Participants receive educational pamphlets on reasons to quit smoking and strategies for quitting smoking. They also receive one-time, group counseling on quitting smoking from a nurse trained in smoking cessation counseling.
|
|---|---|---|
|
Overall Study
STARTED
|
132
|
69
|
|
Overall Study
COMPLETED
|
132
|
69
|
|
Overall Study
NOT COMPLETED
|
0
|
0
|
Reasons for withdrawal
Withdrawal data not reported
Baseline Characteristics
Race and Ethnicity were not collected from any participant.
Baseline characteristics by cohort
| Measure |
Group Commitment Contracts
n=132 Participants
The intervention includes the following components:
1. Education and counseling (same as control group): Participants receive educational pamphlets on reasons to quit smoking and strategies for quitting smoking. They also receive one-time, group counseling on quitting smoking from a nurse trained in smoking cessation counseling.
2. Each participant is required to deposit at least 50 baht at enrollment. A deposit collector visits each participant on a weekly basis and collects additional deposits on a voluntary basis. All deposits are returned only if the smoker quits successfully within three months.
3. The project gives a matching contribution of 150 baht for the initial deposit of at least 50 baht. All participants in the treatment group are further randomized to a one-month group and a three-month group. The one-month group receives an additional 150 baht of project funds if they deposit 100 baht of their money within one month of enrollment. The three-month group receives 150 baht for depositing 100 baht within three months of enrollment.
4. Each participant is paired with another study participant at enrollment. If both quit, each receives a cash bonus of 1,200 baht. At enrollment, pairs receive brief counseling on ways to support each other during the quit attempt.
|
Education and Counseling
n=69 Participants
Participants in this group receive educational pamphlets about quitting smoking and one-time, group counseling from a nurse trained in smoking cessation counseling.
Smoking cessation education and counseling: Participants receive educational pamphlets on reasons to quit smoking and strategies for quitting smoking. They also receive one-time, group counseling on quitting smoking from a nurse trained in smoking cessation counseling.
|
Total
n=201 Participants
Total of all reporting groups
|
|---|---|---|---|
|
Age, Continuous
|
51.05 years
STANDARD_DEVIATION 13.82 • n=132 Participants
|
51.07 years
STANDARD_DEVIATION 14.04 • n=69 Participants
|
51.06 years
STANDARD_DEVIATION 13.86 • n=201 Participants
|
|
Sex: Female, Male
Female
|
16 Participants
n=132 Participants
|
9 Participants
n=69 Participants
|
25 Participants
n=201 Participants
|
|
Sex: Female, Male
Male
|
116 Participants
n=132 Participants
|
60 Participants
n=69 Participants
|
176 Participants
n=201 Participants
|
|
Race and Ethnicity Not Collected
|
—
|
—
|
0 Participants
Race and Ethnicity were not collected from any participant.
|
|
Region of Enrollment
Thailand
|
132 participants
n=132 Participants
|
69 participants
n=69 Participants
|
201 participants
n=201 Participants
|
|
Religion
Buddhist
|
91 Participants
n=131 Participants • Missing baseline data
|
48 Participants
n=69 Participants • Missing baseline data
|
139 Participants
n=200 Participants • Missing baseline data
|
|
Religion
Muslim
|
40 Participants
n=131 Participants • Missing baseline data
|
21 Participants
n=69 Participants • Missing baseline data
|
61 Participants
n=200 Participants • Missing baseline data
|
|
Education (years)
0-3 years
|
62 Participants
n=131 Participants • Missing baseline data
|
34 Participants
n=69 Participants • Missing baseline data
|
96 Participants
n=200 Participants • Missing baseline data
|
|
Education (years)
4-6 years
|
29 Participants
n=131 Participants • Missing baseline data
|
22 Participants
n=69 Participants • Missing baseline data
|
51 Participants
n=200 Participants • Missing baseline data
|
|
Education (years)
7 or more years
|
40 Participants
n=131 Participants • Missing baseline data
|
13 Participants
n=69 Participants • Missing baseline data
|
53 Participants
n=200 Participants • Missing baseline data
|
|
Monthly household income
|
4.011 USD, in 100s
STANDARD_DEVIATION 5.805 • n=131 Participants • Missing baseline data
|
3.513 USD, in 100s
STANDARD_DEVIATION 2.809 • n=69 Participants • Missing baseline data
|
3.838 USD, in 100s
STANDARD_DEVIATION 4.971 • n=200 Participants • Missing baseline data
|
PRIMARY outcome
Timeframe: 6 months after enrollment7-day point prevalence of smoking abstinence measured 6 months after enrollment, using a NicCheck urine cotinine test. Participants who self-report having smoked in the last 7 days, as part of the follow-up survey, are considered to be continuing smokers.
Outcome measures
| Measure |
Group Commitment Contracts
n=128 Participants
The intervention includes the following components:
1. Education and counseling (same as control group): Participants receive educational pamphlets on reasons to quit smoking and strategies for quitting smoking. They also receive one-time, group counseling on quitting smoking from a nurse trained in smoking cessation counseling.
2. Each participant is required to deposit at least 50 baht at enrollment. A deposit collector visits each participant on a weekly basis and collects additional deposits on a voluntary basis. All deposits are returned only if the smoker quits successfully within three months.
3. The project gives a matching contribution of 150 baht for the initial deposit of at least 50 baht. All participants in the treatment group are further randomized to a one-month group and a three-month group. The one-month group receives an additional 150 baht of project funds if they deposit 100 baht of their money within one month of enrollment. The three-month group receives 150 baht for depositing 100 baht within three months of enrollment.
4. Each participant is paired with another study participant at enrollment. If both quit, each receives a cash bonus of 1,200 baht. At enrollment, pairs receive brief counseling on ways to support each other during the quit attempt.
|
Education and Counseling
n=68 Participants
Participants in this group receive educational pamphlets about quitting smoking and one-time, group counseling from a nurse trained in smoking cessation counseling.
Smoking cessation education and counseling: Participants receive educational pamphlets on reasons to quit smoking and strategies for quitting smoking. They also receive one-time, group counseling on quitting smoking from a nurse trained in smoking cessation counseling.
|
|---|---|---|
|
Smoking Status at 6 Months
|
57 Participants
|
13 Participants
|
SECONDARY outcome
Timeframe: 6 months after enrollmentPopulation: In the education and counseling group, this represents a partner who is randomly assigned to the person but whose identity is never revealed.
The concordance of smoking status among randomly assigned pairs: both abstain, both smoke, or one abstains and one smokes, measured using 7-day point-prevalence abstinence at 6 months after enrollment, measured using self-reported abstinence and urine cotinine testing. Participants in the control condition are assigned to a pair, but their partner's identity is never revealed during the study.
Outcome measures
| Measure |
Group Commitment Contracts
n=127 Participants
The intervention includes the following components:
1. Education and counseling (same as control group): Participants receive educational pamphlets on reasons to quit smoking and strategies for quitting smoking. They also receive one-time, group counseling on quitting smoking from a nurse trained in smoking cessation counseling.
2. Each participant is required to deposit at least 50 baht at enrollment. A deposit collector visits each participant on a weekly basis and collects additional deposits on a voluntary basis. All deposits are returned only if the smoker quits successfully within three months.
3. The project gives a matching contribution of 150 baht for the initial deposit of at least 50 baht. All participants in the treatment group are further randomized to a one-month group and a three-month group. The one-month group receives an additional 150 baht of project funds if they deposit 100 baht of their money within one month of enrollment. The three-month group receives 150 baht for depositing 100 baht within three months of enrollment.
4. Each participant is paired with another study participant at enrollment. If both quit, each receives a cash bonus of 1,200 baht. At enrollment, pairs receive brief counseling on ways to support each other during the quit attempt.
|
Education and Counseling
n=55 Participants
Participants in this group receive educational pamphlets about quitting smoking and one-time, group counseling from a nurse trained in smoking cessation counseling.
Smoking cessation education and counseling: Participants receive educational pamphlets on reasons to quit smoking and strategies for quitting smoking. They also receive one-time, group counseling on quitting smoking from a nurse trained in smoking cessation counseling.
|
|---|---|---|
|
Concordance of Smoking Status Between Partners at 6 Months
Both abstain
|
31 Participants
|
2 Participants
|
|
Concordance of Smoking Status Between Partners at 6 Months
Both smoke
|
45 Participants
|
36 Participants
|
|
Concordance of Smoking Status Between Partners at 6 Months
One abstains, one smokes
|
51 Participants
|
17 Participants
|
SECONDARY outcome
Timeframe: 3 months after enrollment7-day point prevalence of smoking abstinence measured 3 months after enrollment, using a NicCheck urine cotinine test. Participants who self-report having smoked in the last 7 days, as part of the follow-up survey, are considered to be continuing smokers.
Outcome measures
| Measure |
Group Commitment Contracts
n=128 Participants
The intervention includes the following components:
1. Education and counseling (same as control group): Participants receive educational pamphlets on reasons to quit smoking and strategies for quitting smoking. They also receive one-time, group counseling on quitting smoking from a nurse trained in smoking cessation counseling.
2. Each participant is required to deposit at least 50 baht at enrollment. A deposit collector visits each participant on a weekly basis and collects additional deposits on a voluntary basis. All deposits are returned only if the smoker quits successfully within three months.
3. The project gives a matching contribution of 150 baht for the initial deposit of at least 50 baht. All participants in the treatment group are further randomized to a one-month group and a three-month group. The one-month group receives an additional 150 baht of project funds if they deposit 100 baht of their money within one month of enrollment. The three-month group receives 150 baht for depositing 100 baht within three months of enrollment.
4. Each participant is paired with another study participant at enrollment. If both quit, each receives a cash bonus of 1,200 baht. At enrollment, pairs receive brief counseling on ways to support each other during the quit attempt.
|
Education and Counseling
n=68 Participants
Participants in this group receive educational pamphlets about quitting smoking and one-time, group counseling from a nurse trained in smoking cessation counseling.
Smoking cessation education and counseling: Participants receive educational pamphlets on reasons to quit smoking and strategies for quitting smoking. They also receive one-time, group counseling on quitting smoking from a nurse trained in smoking cessation counseling.
|
|---|---|---|
|
Smoking Status at 3 Months
|
60 Participants
|
10 Participants
|
SECONDARY outcome
Timeframe: 3 months after enrollmentThe concordance of smoking status among randomly assigned pairs: both abstain, both smoke, or one abstains and one smokes, measured using 7-day point-prevalence abstinence at 3 months after enrollment, measured using self-reported abstinence and urine cotinine testing. Participants in the control condition are assigned to a pair, but their partner's identity is never revealed during the study.
Outcome measures
| Measure |
Group Commitment Contracts
n=128 Participants
The intervention includes the following components:
1. Education and counseling (same as control group): Participants receive educational pamphlets on reasons to quit smoking and strategies for quitting smoking. They also receive one-time, group counseling on quitting smoking from a nurse trained in smoking cessation counseling.
2. Each participant is required to deposit at least 50 baht at enrollment. A deposit collector visits each participant on a weekly basis and collects additional deposits on a voluntary basis. All deposits are returned only if the smoker quits successfully within three months.
3. The project gives a matching contribution of 150 baht for the initial deposit of at least 50 baht. All participants in the treatment group are further randomized to a one-month group and a three-month group. The one-month group receives an additional 150 baht of project funds if they deposit 100 baht of their money within one month of enrollment. The three-month group receives 150 baht for depositing 100 baht within three months of enrollment.
4. Each participant is paired with another study participant at enrollment. If both quit, each receives a cash bonus of 1,200 baht. At enrollment, pairs receive brief counseling on ways to support each other during the quit attempt.
|
Education and Counseling
n=55 Participants
Participants in this group receive educational pamphlets about quitting smoking and one-time, group counseling from a nurse trained in smoking cessation counseling.
Smoking cessation education and counseling: Participants receive educational pamphlets on reasons to quit smoking and strategies for quitting smoking. They also receive one-time, group counseling on quitting smoking from a nurse trained in smoking cessation counseling.
|
|---|---|---|
|
Concordance of Smoking Status Between Partners at 3 Months
Both abstain
|
35 Participants
|
0 Participants
|
|
Concordance of Smoking Status Between Partners at 3 Months
Both smoke
|
44 Participants
|
40 Participants
|
|
Concordance of Smoking Status Between Partners at 3 Months
One abstains, one smokes
|
49 Participants
|
15 Participants
|
SECONDARY outcome
Timeframe: 14 months after enrollment7-day point prevalence of smoking abstinence measured 6 months after enrollment, using a NicCheck urine cotinine test. Participants who self-report having smoked in the last 7 days, as part of the follow-up survey, are considered to be continuing smokers.
Outcome measures
| Measure |
Group Commitment Contracts
n=128 Participants
The intervention includes the following components:
1. Education and counseling (same as control group): Participants receive educational pamphlets on reasons to quit smoking and strategies for quitting smoking. They also receive one-time, group counseling on quitting smoking from a nurse trained in smoking cessation counseling.
2. Each participant is required to deposit at least 50 baht at enrollment. A deposit collector visits each participant on a weekly basis and collects additional deposits on a voluntary basis. All deposits are returned only if the smoker quits successfully within three months.
3. The project gives a matching contribution of 150 baht for the initial deposit of at least 50 baht. All participants in the treatment group are further randomized to a one-month group and a three-month group. The one-month group receives an additional 150 baht of project funds if they deposit 100 baht of their money within one month of enrollment. The three-month group receives 150 baht for depositing 100 baht within three months of enrollment.
4. Each participant is paired with another study participant at enrollment. If both quit, each receives a cash bonus of 1,200 baht. At enrollment, pairs receive brief counseling on ways to support each other during the quit attempt.
|
Education and Counseling
n=68 Participants
Participants in this group receive educational pamphlets about quitting smoking and one-time, group counseling from a nurse trained in smoking cessation counseling.
Smoking cessation education and counseling: Participants receive educational pamphlets on reasons to quit smoking and strategies for quitting smoking. They also receive one-time, group counseling on quitting smoking from a nurse trained in smoking cessation counseling.
|
|---|---|---|
|
Smoking Status at 14 Months
|
53 Participants
|
17 Participants
|
Adverse Events
Group Commitment Contracts
Serious events: 0 serious events
Other events: 0 other events
Deaths: 1 deaths
Education and Counseling
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
Results disclosure agreements
- Principal investigator is a sponsor employee
- Publication restrictions are in place