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CompletedNCT03276780NRTUpdated May 8, 2024Results posted

Nicotine Replacement Therapy (NRT) Sampling and Selection to Increase Medication Adherence

A Phase 4 interventional study of Counseling and combination NRT in Smoking Cessation, sponsored by University of Alabama at Birmingham. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-05-08.

Sponsored by University of Alabama at Birmingham · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
80
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

To determine the preliminary impact on Nicotine Replacement Therapy (NRT)adherence and examine the underlying mechanisms of action associated with adherence.

Read the detailed description

Adherence is a critical target for successful smoking cessation, with good adherence associated with a three-fold increase in cessation rates relative to poor adherence. Psychoeducational interventions focused on increasing adherence to NRT do not result in behavioral change (e.g., smoking cessation). Experiential approaches, such NRT sampling with practice quit attempts (PQAs), are based on learning theory models of behavioral change and have resulted in increased motivation, self-efficacy, adherence, and abstinence relative to psychoeducation or motivational interventions. However, nicotine sampling still relies of the participant using NRT outside of session, which may not occur. Providing an experiential intervention in which the NRT is sampled and any problems with NRT reframed during the session may provide a powerful learning experience that can increase in home sampling with PQAs and long-term adherence, ultimately increasing the likelihood of smoking cessation. This may be particularly relevant for low-income smokers who hold more negative views of NRT, have lower health literacy, and are less likely to use medication during cessation attempts.

02

Conditions studied

  • Smoking Cessation
03

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

a) 18 years or older; b) qualifying as low income (as defined by making \<150% above the poverty line or \<$22,260 as a single or \<$45,570 for a family of four); c) Smoking at least 5 cigarettes per day (CPD) for the past year and a carbon monoxide (CO) level of less than 8 ppm to ensure daily smoking. This relatively low cutoff was chosen due to the expectation of enrolling a large >50% African-American who average \<10 CPD compared to Whites who average \~15 CPD.; and d) English speaking.

Exclusion criteria

Exclusion Criteria:

a) Living in a restricted environment (e.g., prison or jail facility, etc.); b) Pregnant or nursing (all women will be required to use an acceptable form of contraception); c) Currently enrolled in a smoking cessation treatment program, using NRT products, or prescribed bupropion or varenicline; d) Known allergy to any of the nicotine replacement products or sensitivity to adhesive used in nicotine patches; e) Trouble breathing, a pulmonary condition, or sinus problems; f) Within one month post-myocardial infarction or untreated severe angina; g) poor dentation or temporomandibular joint (TMJ) problems such as unable to use nicotine gum; h) Cognitive impairment or unstable psychiatric condition that interferes with the informed consent process (individuals stable on psychiatric medications will be included); or i) Daily or exclusive use of other tobacco products (e.g., electronic cigarettes, little cigars, etc.).

04

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
80 participants (actual)

Study arms

  • Experimental
    In vivo

    Will receive 4 types of short-acting NRT medication to use in combination with the nicotine patch in each counseling session for four sessions. At the fifth session, participants will select their short acting NRT to use with the patch to make a cessation attempt.

    Behavioral: Counseling · Drug: combination NRT

  • Active comparator
    Standard of care

    Will receive 4 sessions of behavioral counseling around their smoking. At the fifth session, participants will select their short-acting NRT to use with the nicotine patch based on a product description of each product to make a cessation attempt.

    Behavioral: Counseling · Drug: combination NRT

Interventions

  • BehavioralCounseling

    Both groups receive smoking cessation counseling although one is focused on medication adherence and addressing barriers to adherence while the other is focused on standard behavioral strategies to quit smoking

  • Drugcombination NRT

    Both groups will receive combination NRT to help with smoking cessation

05

What researchers measure

Primary outcomes

  1. Rate of Participant Retention

    Feasibility of the novel NRT intervention was measured by enrolling the targeted sample size of 80 participants. This outcome measure was also measured by the rate of retention of the participants from baseline to the last study visit after 4 months had passed.

    Time frame: From baseline through 4 months

  2. Rate of Recruitment

    The acceptability of the novel NRT intervention was measured by calculating the rate of recruitment of study participants during the 56 weeks of active recruitment and intervention for this study.

    Time frame: 56 weeks

  3. Rate of Enrollment

    The acceptability of the novel NRT intervention was measured by calculating the rate of enrollment of study participants during the 56 weeks of active recruitment and intervention for this study.

    Time frame: 56 weeks

  4. Treatment Satisfaction

    Treatment satisfaction was measured using the Treatment Satisfaction Survey (TSS), a measure developed in the research lab (i.e. no standardized scoring). The measure included 10 questions about satisfaction with the study treatment that participants rated from 1 (not helpful) to 7 (very helpful). The minimum value for this scale was 10 and the maximum value for this scale was 70, with a total score of 70 indicating greater satisfaction with the study treatment and a score of 10 indicating no satisfaction with the study treatment. Higher scores on this measure indicated better outcomes for the participant since higher scores indicated more satisfaction with the study treatment.

    Time frame: 5 weeks

  5. Treatment Satisfaction

    Treatment satisfaction was measured using the Treatment Satisfaction Survey (TSS), a measure developed in the research lab (i.e. no standardized scoring). The measure included 10 questions about satisfaction with the study treatment that participants rated from 1 (not helpful) to 7 (very helpful). The minimum value for this scale was 10 and the maximum value for this scale was 70, with a total score of 70 indicating greater satisfaction with the study treatment and a score of 10 indicating no satisfaction with the study treatment. Higher scores on this measure indicated better outcomes for the participant since higher scores indicated more satisfaction with the study treatment.

    Time frame: 13 weeks

  6. Treatment Satisfaction

    Treatment satisfaction was measured using the Treatment Satisfaction Survey (TSS), a measure developed in the research lab (i.e. no standardized scoring). The measure included 10 questions about satisfaction with the study treatment that participants rated from 1 (not helpful) to 7 (very helpful). The minimum value for this scale was 10 and the maximum value for this scale was 70, with a total score of 70 indicating greater satisfaction with the study treatment and a score of 10 indicating no satisfaction with the study treatment. Higher scores on this measure indicated better outcomes for the participant since higher scores indicated more satisfaction with the study treatment.

    Time frame: 4 months

  7. Treatment Expectancies at Baseline

    Treatment expectancies were measured using the Treatment Expectations questionnaire, a measure developed in the research lab (i.e. no standardized scoring). This measure included 8 items assessing how useful participants' believed the study treatment would be in helping them quit smoking. Participants rated items 1-5 on a scale from 1 (not at all helpful) to 7 (very much helpful). For items 1-3, participants chose which study treatment they would recommend the most to a friend (i.e. the nicotine patch, nicotine gum, nicotine inhaler, nicotine nasal spray, nicotine lozenge, or none), which study treatment they would recommend least to a friend, and overall, which study treatment they found to be the most useful. Only items 1-5 were analyzed for outcomes, with 35 as the maximum value and 5 as the minimum value. Higher scores indicated higher participant expectations for the study treatment and higher expectations for their treatment outcome.

    Time frame: Assessed at baseline

  8. Treatment Credibility

    Treatment credibility was measured using the Credibility and Expectancy Questionnaire (CEQ), which is a standardized measure of treatment credibility and expectancy. CEQ scores were standardized, with the minimum score being -13.5 and the maximum score being 4.43. Higher scores indicated the participant believed the treatment was more credible and had higher expectations for their treatment outcome.

    Time frame: 5 weeks

  9. Treatment Credibility

    Treatment credibility was measured using the Credibility and Expectancy Questionnaire (CEQ), which is a standardized measure of treatment credibility and expectancy. CEQ scores were standardized, with the minimum score being -13.5 and the maximum score being 4.43. High scores indicated the participant believed the treatment was more credible and had higher expectations for their treatment outcome.

    Time frame: 13 weeks

  10. Treatment Credibility

    Treatment credibility was measured using the Credibility and Expectancy Questionnaire (CEQ), which is a standardized measure of treatment credibility and expectancy. CEQ scores were standardized, with the minimum score being -13.5 and the maximum score being 4.43. High scores indicated the participant believed the treatment was more credible and had higher expectations for their treatment outcome.

    Time frame: 4 months

  11. Number of Participants With Medication Adherence at Week 6

    Medication adherence was assessed through self reports from participants and confirmed with package counts by study staff.

    Time frame: From baseline through 6 weeks

  12. Number of Participants With Medication Adherence at Week 9

    Medication adherence was assessed through self reports from participants and confirmed with package counts by study staff.

    Time frame: From baseline through 9 weeks

  13. Number of Participants With Medication Adherence at Week 13

    Medication adherence was assessed through self reports from participants and confirmed with package counts by study staff.

    Time frame: From baseline through 13 weeks

06

Results

Posted Dec 20, 2021

Participant flow

Participant flow — Overall Study
MilestoneIn VivoStandard of Care
Started4139
Completed2329
Not completed1810
Withdrew: Withdrawal by subject53
Withdrew: Lost to follow-up35
Withdrew: Moved out of state11
Withdrew: Already enrolled in another smoking cessation study providing nrt10
Withdrew: No show to appointments after baseline through week 581

Outcome measures

PrimaryRate of Participant Retention

Feasibility of the novel NRT intervention was measured by enrolling the targeted sample size of 80 participants. This outcome measure was also measured by the rate of retention of the participants from baseline to the last study visit after 4 months had passed.

Time frame:
From baseline through 4 months
Reported as:
Count of participants · Participants
Rate of Participant Retention
ParticipantsIn VivoStandard of Care
Participant retention rate2329
Participant attrition rate1810
PrimaryRate of Recruitment

The acceptability of the novel NRT intervention was measured by calculating the rate of recruitment of study participants during the 56 weeks of active recruitment and intervention for this study.

Time frame:
56 weeks
Reported as:
Number · participants screened per week
Rate of Recruitment
participants screened per weekTotal Participants Screened
Rate of Recruitment5.84
PrimaryRate of Enrollment

The acceptability of the novel NRT intervention was measured by calculating the rate of enrollment of study participants during the 56 weeks of active recruitment and intervention for this study.

Time frame:
56 weeks
Reported as:
Number · participants enrolled per week
Rate of Enrollment
participants enrolled per weekTotal Participants Enrolled
Rate of Enrollment1.43
PrimaryTreatment Satisfaction

Treatment satisfaction was measured using the Treatment Satisfaction Survey (TSS), a measure developed in the research lab (i.e. no standardized scoring). The measure included 10 questions about satisfaction with the study treatment that participants rated from 1 (not helpful) to 7 (very helpful). The minimum value for this scale was 10 and the maximum value for this scale was 70, with a total score of 70 indicating greater satisfaction with the study treatment and a score of 10 indicating no satisfaction with the study treatment. Higher scores on this measure indicated better outcomes for the participant since higher scores indicated more satisfaction with the study treatment.

Time frame:
5 weeks
Reported as:
Mean · score on a scale
Treatment Satisfaction
score on a scaleIn VivoStandard of Care
Treatment Satisfaction67.70 ± 3.8169.20 ± 4.81
PrimaryTreatment Satisfaction

Treatment satisfaction was measured using the Treatment Satisfaction Survey (TSS), a measure developed in the research lab (i.e. no standardized scoring). The measure included 10 questions about satisfaction with the study treatment that participants rated from 1 (not helpful) to 7 (very helpful). The minimum value for this scale was 10 and the maximum value for this scale was 70, with a total score of 70 indicating greater satisfaction with the study treatment and a score of 10 indicating no satisfaction with the study treatment. Higher scores on this measure indicated better outcomes for the participant since higher scores indicated more satisfaction with the study treatment.

Time frame:
13 weeks
Reported as:
Mean · score on a scale
Treatment Satisfaction
score on a scaleIn VivoStandard of Care
Treatment Satisfaction65.21 ± 10.6766.39 ± 5.91
PrimaryTreatment Satisfaction

Treatment satisfaction was measured using the Treatment Satisfaction Survey (TSS), a measure developed in the research lab (i.e. no standardized scoring). The measure included 10 questions about satisfaction with the study treatment that participants rated from 1 (not helpful) to 7 (very helpful). The minimum value for this scale was 10 and the maximum value for this scale was 70, with a total score of 70 indicating greater satisfaction with the study treatment and a score of 10 indicating no satisfaction with the study treatment. Higher scores on this measure indicated better outcomes for the participant since higher scores indicated more satisfaction with the study treatment.

Time frame:
4 months
Reported as:
Mean · score on a scale
Treatment Satisfaction
score on a scaleIn VivoStandard of Care
Treatment Satisfaction66.35 ± 9.8265.62 ± 10.57
PrimaryTreatment Expectancies at Baseline

Treatment expectancies were measured using the Treatment Expectations questionnaire, a measure developed in the research lab (i.e. no standardized scoring). This measure included 8 items assessing how useful participants' believed the study treatment would be in helping them quit smoking. Participants rated items 1-5 on a scale from 1 (not at all helpful) to 7 (very much helpful). For items 1-3, participants chose which study treatment they would recommend the most to a friend (i.e. the nicotine patch, nicotine gum, nicotine inhaler, nicotine nasal spray, nicotine lozenge, or none), which study treatment they would recommend least to a friend, and overall, which study treatment they found to be the most useful. Only items 1-5 were analyzed for outcomes, with 35 as the maximum value and 5 as the minimum value. Higher scores indicated higher participant expectations for the study treatment and higher expectations for their treatment outcome.

Time frame:
Assessed at baseline
Reported as:
Mean · score on a scale
Treatment Expectancies at Baseline
score on a scaleIn VivoStandard of Care
Treatment Expectancies at Baseline23.29 ± 7.6821.23 ± 10.58
PrimaryTreatment Credibility

Treatment credibility was measured using the Credibility and Expectancy Questionnaire (CEQ), which is a standardized measure of treatment credibility and expectancy. CEQ scores were standardized, with the minimum score being -13.5 and the maximum score being 4.43. Higher scores indicated the participant believed the treatment was more credible and had higher expectations for their treatment outcome.

Time frame:
5 weeks
Reported as:
Mean · score on a scale
Treatment Credibility
score on a scaleIn VivoStandard of Care
Treatment Credibility1.43 ± 3.670.84 ± 5.05
PrimaryTreatment Credibility

Treatment credibility was measured using the Credibility and Expectancy Questionnaire (CEQ), which is a standardized measure of treatment credibility and expectancy. CEQ scores were standardized, with the minimum score being -13.5 and the maximum score being 4.43. High scores indicated the participant believed the treatment was more credible and had higher expectations for their treatment outcome.

Time frame:
13 weeks
Reported as:
Mean · score on a scale
Treatment Credibility
score on a scaleIn VivoStandard of Care
Treatment Credibility-0.74 ± 5.120.08 ± 3.78
PrimaryTreatment Credibility

Treatment credibility was measured using the Credibility and Expectancy Questionnaire (CEQ), which is a standardized measure of treatment credibility and expectancy. CEQ scores were standardized, with the minimum score being -13.5 and the maximum score being 4.43. High scores indicated the participant believed the treatment was more credible and had higher expectations for their treatment outcome.

Time frame:
4 months
Reported as:
Mean · score on scale
Treatment Credibility
score on scaleIn VivoStandard of Care
Treatment Credibility-0.26 ± 5.22-1.64 ± 5.47
PrimaryNumber of Participants With Medication Adherence at Week 6

Medication adherence was assessed through self reports from participants and confirmed with package counts by study staff.

Time frame:
From baseline through 6 weeks
Reported as:
Count of participants · Participants
Number of Participants With Medication Adherence at Week 6
ParticipantsIn VivoStandard of Care
No patch doses missed2226
No NRT doses missed2327
PrimaryNumber of Participants With Medication Adherence at Week 9

Medication adherence was assessed through self reports from participants and confirmed with package counts by study staff.

Time frame:
From baseline through 9 weeks
Reported as:
Count of participants · Participants
Number of Participants With Medication Adherence at Week 9
ParticipantsIn VivoStandard of Care
No patch doses missed2324
No NRT doses missed2633
PrimaryNumber of Participants With Medication Adherence at Week 13

Medication adherence was assessed through self reports from participants and confirmed with package counts by study staff.

Time frame:
From baseline through 13 weeks
Reported as:
Count of participants · Participants
Number of Participants With Medication Adherence at Week 13
ParticipantsIn VivoStandard of Care
No patch doses missed1821
No NRT doses missed1722

Adverse events

Collected over Baseline through 4 months. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
In Vivo0/41 (0%)1/41 (2.4%)15/41 (36.6%)
Standard of Care0/39 (0%)1/39 (2.6%)2/39 (5.1%)
Most frequent serious events
Most frequent serious events
EventIn VivoStandard of Care
PneumoniaRespiratory, thoracic and mediastinal disorders0/411/39
Severe DepressionPsychiatric disorders0/411/39
Undisclosed VirusGeneral disorders1/410/39
Most frequent other events
Showing 10 of 22
Most frequent other events
EventIn VivoStandard of Care
Vivid Dreams/NightmaresGeneral disorders4/410/39
VomitingGastrointestinal disorders4/410/39
NauseaGastrointestinal disorders3/410/39
Throat IrritationRespiratory, thoracic and mediastinal disorders2/410/39
Ear PainEar and labyrinth disorders2/410/39
Excessive SneezingRespiratory, thoracic and mediastinal disorders2/410/39
RashSkin and subcutaneous tissue disorders2/411/39
HeadacheGeneral disorders2/411/39
Burning Mouth/ThroatRespiratory, thoracic and mediastinal disorders1/411/39
Excessive CoughingRespiratory, thoracic and mediastinal disorders1/411/39

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)In VivoStandard of CareTotal
<=18 years000
Between 18 and 65 years413980
>=65 years000
Sex: Female, Male
Sex: Female, Male(Participants)In VivoStandard of CareTotal
Female181230
Male232750
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)In VivoStandard of CareTotal
Hispanic or Latino202
Not Hispanic or Latino393978
Unknown or Not Reported000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)In VivoStandard of CareTotal
American Indian or Alaska Native011
Asian000
Native Hawaiian or Other Pacific Islander000
Black or African American222345
White181533
More than one race101
Unknown or Not Reported000
Region of Enrollment
Region of Enrollment(participants)In VivoStandard of CareTotal
United States413980
Quitting Smoking Behaviors at Baseline
Quitting Smoking Behaviors at Baseline(Participants)In VivoStandard of CareTotal
Thinking of quitting smoking in the next month242145
Thinking of quitting smoking within the next 6 months171431
Tried NRT to help quit smoking before?131629
Tried therapy to help quit smoking before?213
Tried self-help materials to help quit before?145
Tried hypnosis to help quit smoking before?202
Tried medication to help quit smoking before?4711
Tried e-cigarettes to help quit smoking before?121224
Are any medical problems worsened by smoking?41014
Live with people who smoke?292958
Not thinking of quitting smoking044
Cigarettes Per Day at Baseline
Cigarettes Per Day at Baseline(cigarettes per day)In VivoStandard of CareTotal
Mean19.46 ± 11.0518.36 ± 9.2618.93 ± 10.17
Carbon Monoxide (CO) Level at Baseline
Carbon Monoxide (CO) Level at Baseline(parts per million (ppm) of CO)In VivoStandard of CareTotal
Mean18.56 ± 11.2818.23 ± 8.0218.40 ± 9.76

3 further baseline measures are reported on the registry.

07

Study locations

1 site
  • University of Alabama at Birmingham
    Birmingham, Alabama 35294, United States
08

References and documents

Study documents

  • Study protocol · May 19, 2021
  • Statistical analysis plan · May 19, 2021

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

09

Registry details

Key details

Study ID
NCT03276780
Lead sponsor
University of Alabama at Birmingham
Collaborators
National Institute on Drug Abuse (NIDA)
Responsible party
Karen Cropsey (Professor of Psychiatry, University of Alabama at Birmingham) — Principal investigator
First posted
Sep 8, 2017
Start date
May 3, 2018
Primary completion
May 31, 2020
Completion
Oct 31, 2020
Results posted
Dec 20, 2021
Last update
May 8, 2024

Study contacts

Karen Cropsey, PsyD
principal investigator · University of Alabama at Birmingham

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
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