Smoking Cessation & Opioid Dependence Treatment Integration

Smoking Cessation Clinical Trial

Official title:

Smoking Cessation & Opioid Dependence Treatment Integration: Does Timing Matter?

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT02854800
• Other study ID #: WestVirginiaU
• Secondary ID: NOT-DA-16-013
• Status: Completed
• Phase: Phase 2/Phase 3
• Start date: July 8, 2016
• Est. completion date: April 10, 2017

Study information

• Verified date: August 2020
• Source: West Virginia University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The primary purpose of this study was to examine the feasibility of integrating a smoking cessation intervention for cigarette smokers enrolled in an outpatient program for opioid dependence. The secondary purpose was to compare treatment effects as a function of phase in the outpatient program: 0-90 days (weekly attendance), 90 days-1 year (biweekly attendance), and more than 1 year (monthly attendance).

Description:

Tobacco smoking rates are substantially higher among individuals with substance use disorders (SUDs), relative to individuals in the general population (e.g., 97% vs. 19%, respectively). Yet most treatment programs for SUDs fail to address the use of tobacco among patients, and integration of smoking cessation treatment with SUD treatment may improve outcomes for both drugs. The question remains, however, whether to implement a smoking cessation component immediately or only after a patient is stabilized on their SUD pharmacotherapy. Existing research that directly addresses this factor is limited and findings are mixed. Therefore, the purpose of this study was to compare drug use outcomes among patients at three different stages of their SUD treatment: 0-90 days (weekly clinic attendance), 90 days-1 year (biweekly clinic attendance), and more than 1 year (monthly clinic attendance) of consistent abstinence from illicit drugs. Smokers currently in treatment for opioid dependence, at the WVU Comprehensive Opioid Addiction Treatment (COAT) program, were recruited to participate in this 12-week study. Our goal was to complete 20 patients from each of the three COAT treatment groups. During the 12-week intervention period, individuals continued to attend their regular COAT clinic appointments while following a standard varenicline (Chantix®) dosing regimen and responding to questions daily via text messaging (e.g., adherence to varenicline, use of tobacco, tobacco withdrawal side effects, etc.). The primary outcomes are those relevant to feasibility: 1) recruitment, randomization, and retention, 2) adherence to medication regimen, and 3) compliance with responding to text message-based questions. Secondary outcomes include a comparison of the three COAT treatment groups on 1) relapses for all substances, 2) the proportion of smokers abstinent at each assessment (confirmed with expired air carbon monoxide samples), 3) days until successful cigarette quit day, 4) substance withdrawal and medication side effect symptoms, 5) motivation to quit tobacco, and 6) cigarette quit attempts.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 74
• Est. completion date: April 10, 2017
• Est. primary completion date: April 10, 2017
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• enrolled in the Comprehensive Opioid Addiction Treatment (COAT) program

• report smoking >10 cigarettes per day for >1 year

• provide an expired air carbon monoxide (CO) reading of >10 parts/million (ppm)

• report interest in making a quit attempt in the next 1-6 months (Contemplation or Preparation stages via the Stage of Change; Prochaska & Diclemente, 1983)

• willing to try varenicline for smoking cessation

Exclusion Criteria:

• current engagement in any form of tobacco cessation (e.g., pharmacotherapy)

• current use of contraindicated medications (e.g., theophylline, warfarin, insulin)

• Stage of Change category as Precontemplation (no plans to quit), Action (actively trying to quit), or Maintenance (have already quit)

• self-reported seizures in the past year

• untreated cardiovascular disease

• self-report breast-feeding

• pregnancy (verified by urinalysis)

• not within 4 weeks of advancing to the next COAT group

Related Conditions & MeSH terms

• Opioid Related Disorders
• Opioid-Related Disorders
• Smoking Cessation

Intervention

Drug:
• varenicline
Participants followed the schedule of dosing that is specified on the label: 0.5 mg once daily (Days 1-3), 0.5 mg twice daily (Days 4-7), and 1 mg twice daily (Days 8-84).

Locations

Country	Name	City	State
United States	West Virginia University Chestnut Ridge Center	Morgantown	West Virginia

Sponsors (3)

Lead Sponsor	Collaborator
West Virginia University	National Institute on Drug Abuse (NIDA), Pfizer

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Recruitment, Assignment to Treatment, and Retention Rates	For primary feasibility outcomes, recruitment, assignment to treatment, and retention rates were analyzed using descriptive statistics.	up to 12 weeks
Primary	Percentage of Days on Which Participants Experienced Each Reason for Attrition	Drug withdrawal and medication side effect ratings were assessed as potential reasons for attrition. This assessment was completed by calculating the mean percentage of days, out of the first four weeks, during which effects were reported by participants who completed the entire 12-week protocol versus participants that dropped out. We limited this analysis to the first four weeks.	up to 4 weeks
Primary	Number of Study Days With Protocol Non-Adherence	Medication non-adherence rates: The number of study days on which participants a) self-reported not taking the medication (i.e. provided a response of "no") or b) had a missing medication response (i.e. provided no response) via text message.; Text-messaging non-adherence rates: The number of study days in which participants failed to respond to one or more assessments measured via text message.	up to 12 weeks
Primary	Medication Acceptability for Completers	Side effect ratings of nausea, headache, sleep problems, gas/constipation, abnormal dreams, depressed mood, and drowsy; scores ranged from 0-10 and higher scores indicate more severe symptoms.	up to 12 weeks
Secondary	Number of Participants With Cigarette Smoking Quit Attempts and Actual Quit	A quit attempt was defined as at least one study day on which 0 cigarettes smoked was reported via text message. Actual quit rates were determined by biochemically verified cigarette abstinence, which was an expired air carbon monoxide reading of < 8 parts per million (ppm).	Up to 12 weeks
Secondary	Number of Study Days Until First Cigarette Quit Attempt	A quit attempt was defined as at least one day on which participants reported 0 cigarettes smoked via text message. Reports of >0 cigarettes on subsequent days was indicative of relapse.	up to 12 weeks
Secondary	Cigarettes Smoked Per Day	The number of cigarettes smoked per day were reported via text message by participants daily. These numbers were averaged within weeks to give 12 separate average weekly values for cigarettes per day.	up to 12 weeks
Secondary	Drug Withdrawal Ratings	Average self-reported ratings for craving, irritability, restless, alert, bored, calm/relaxed, able to focus, nervous, and other; scores ranged from 0-10 and higher scores indicate higher levels of that withdrawal effect	up to 12 weeks
Secondary	Expired Air Carbon Monoxide	Expired air carbon monoxide levels were measured for participants every 4 weeks at their in-person study visits, resulting in 4 separate measures across the 12-week period.	up to 12 weeks
Secondary	Number of Participants With Relapse for Illicit Drugs (Opioids, Cocaine, THC, Etc)	Relapse was determined by semi-quantitative urine testing (positive vs negative result). Positive results for illicit drugs were assessed separately (opioids, cocaine, THC, benzodiazepines, amphetamines, and atypical antipsychotics).	up to 12 weeks
Secondary	Readiness to Quit Smoking	The Readiness to Quit Ladder was administered to participants at each of their in-person study visits, for a total of 4 data collections. Participants were asked to indicate their readiness to quit smoking on a scale ranging from 0 (I have no interest in quitting smoking) to 10 (I have already quit smoking).	up to 12 weeks
Secondary	Number of Participants That Moved in Stage of Change for Quitting Smoking	Participants indicated one of the following stages of change at each of their four in-person study visits: Precontemplation (no plans to quit smoking), Contemplation (plans to quit smoking in the next 6 months), Preparation (plans to quit smoking in the next 30 days), Action (currently engaging in quitting smoking), or Maintenance (quit smoking more than 6 months ago).; Data were quantified by determining the number of participants who moved towards quitting (i.e., moved up one or more stages), the number of participants who moved away from quitting (i.e., moved down one or more stages), and and the number of participants who remained in the same stage.	up to 12 weeks