Smoking Reduction and Cessation Interventions for Chinese

A Stage-Based Scheduled Smoking Intervention for Chinese

This study aims at developing and testing a stage-based scheduled smoking intervention that targets to encourage smokers to reduce smoking and to facilitate smoking abstinence. We hypothesize that smokers who receive the staged-based scheduled smoking intervention will be more likely to report smoking abstinence, quit attempts, and smoking reduction at 12 months.

Study Overview

• Status: Completed
• Conditions: Smoking Cessation
• Intervention / Treatment: Behavioral: Expert System Only; Behavioral: Enhanced Expert System

Detailed Description

The objective of the study is to document and systematically investigate the use of smoking reduction and cessation strategies targeting Chinese American smokers at various level of readiness to quit smoking.

Using a randomized controlled study design, the experimental intervention will be compared to a control group that will receive the expert system intervention only at 3-, 6- and 12-month follow-up. The primary aim is to test the following hypotheses:

1. Participants receiving the experimental intervention will be more likely to achieve at least a 50% reduction from baseline at 3-month (end of treatment), 6- and 12-month follow-up than participants in the control condition.
2. Participants receiving the experimental intervention will be more likely to report a 24- hour quit attempt at 3-, 6- and 12-month follow-up.
3. Participants receiving the experimental intervention will be report a longer length of abstinence in their quit attempts at 3-, 6- and 12-month follow-up.
4. The experimental condition will yield a higher rate of smoking abstinence at 3-, 6- and 12-month follow-up.

The secondary aim is to examine the feasibility of the proposed intervention which will be assessed by recruitment efficiency, refusal rates, adherence, usage, safety data, and perceived helpfulness of the intervention components. In addition, analyses will be pursued to explore both short- and long-term maintenance of smoking reduction achieved, the association between smoking reduction and changes in self-efficacy of resisting from smoking, stage movements (changes in readiness for quitting), and the use of coping strategies for smoking at follow-ups. The study will provide important empirical data for developing effective smoking cessation strategies that are culturally and linguistically appropriate for the Chinese American population.

• Study Type: Interventional
• Enrollment (Actual): 298
• Phase: Not Applicable

Contacts and Locations

Study Locations

• United States
  • California
    • San Francisco, California, United States, 94143
      • UCSF Langley Porter

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Self-identified ethnic Chinese men and women
• 18 years or older
• report smoking cigarettes daily with at least 5 cigarettes per day in the last 7 days
• reside in California
• be able to read written English or Chinese

Exclusion Criteria:

• Currently engaging in assisted smoking cessation efforts
• Have health conditions that have contraindications of using nicotine replacement treatment (NRT) such as pregnancy, within 6 months post MI, severe or unstable angina

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: 1; Expert system only, which includes a stage-matched manual, and a series of 3 individualized tailored feedback reports at baseline, 1, and 3 months.	Behavioral: Expert System Only; Expert system which includes a stage-matched manual, and a series of 3 individualized tailored feedback reports at baseline, 1, and 3 months
Experimental: 2; The intervention consists of 3 components: Expert system which includes a stage-matched manual, and a series of 3 individualized tailored feedback reports at baseline, 1, and 3 months; scheduled smoking intervention, which includes a tailored-made 3-week smoking reduction schedule and a stage-matched tip guide to explain why and how to use the smoking reduction intervention; telephone check-in calls to provide brief counseling and technical support to motivate participants to use the intervention materials; a 2-week supply of nicotine gum or lozenge per participants' choice to use during smoking reduction	Behavioral: Enhanced Expert System; The intervention consists of 3 components: Expert system which includes a stage-matched manual, and a series of 3 individualized tailored feedback reports at baseline, 1, and 3 months; scheduled smoking intervention, which includes a tailored-made 3-week smoking reduction schedule and a stage-matched tip guide to explain why and how to use the smoking reduction intervention; telephone check-in calls to provide brief counseling and technical support to motivate participants to use the intervention materials; a 2-week supply of nicotine gum or lozenge per participants' choice to use during smoking reduction

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
self-report 7-day smoking abstinence	12 months

Secondary Outcome Measures

Outcome Measure	Time Frame
self-report a 24-hour quit attempt	12 months
50% or more reduction in smoking from baseline	12 months

Collaborators and Investigators

• Sponsor: University of California, San Francisco
• Collaborators: University of California
• Investigators: Principal Investigator: Janice Tsoh, PhD, University of California, San Francisco

Study record dates

Study Major Dates

• Study Start: April 1, 2007
• Primary Completion (Actual): June 1, 2009
• Study Completion (Actual): June 1, 2009

Study Registration Dates

• First Submitted: July 9, 2008
• First Submitted That Met QC Criteria: July 9, 2008
• First Posted (Estimate): July 14, 2008

Study Record Updates

• Last Update Posted (Estimate): July 10, 2013
• Last Update Submitted That Met QC Criteria: July 9, 2013
• Last Verified: July 1, 2013

More Information

Terms related to this study

• Keywords: counseling; smoking cessation; smoking reduction; expert system; nicotine replacement; Asian American; Chinese American; stage-based intervention
• Other Study ID Numbers: 14RT-0160H; TRDRP grant: 14RT-0160H; H10315-27252-03B