Clinical trial NCT00714467: Expert System and Family Assisted Interventions for Chinese Smokers
Official title: Expert System and Family Assisted Interventions for Chinese Smokers
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Smoking Cessation
Keywords: smoking cessation
Asian
Chinese American
family support
social support
stage-based intervention
Lead sponsor: University of California, San Francisco
Sponsor class: OTHER
Collaborators: name: American Cancer Society, Inc.
First posted: 2008-07-14
Enrollment: 1280
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: In this study, we choose to specifically recruit Chinese, the largest ethnic group of the Asian and Pacific Islander community,2 as an initial step to increase our understanding of the role of family or supportive others in the process of smoking cessation among Asian Americans. We propose the following specific aims for the study:

1. Examine the effectiveness of proactive recruitment of Chinese smokers into a smoking cessation treatment program through their family or friends.
2. Test the efficacy of a family assisted intervention using the stages of change approach in promoting smoking cessation in the context of an expert system intervention.
3. Explore the role of supportive and non-supportive behaviors in relation to both short-term and long-term smoking cessation outcomes in the presence of the expert system intervention.

Detailed description: Limited empirical data are available on effective intervention approaches targeting Chinese American smokers. The overall goal of this study is to increase our understanding of the role of family or social support in the facilitation of the process of smoking cessation among Chinese smokers. We propose the following specific aims for the study: 1) Examine the effectiveness of proactive recruitment of Chinese smokers into a smoking cessation treatment program through their family or friends; 2) Test the efficacy of a family assisted intervention using the stages of change approach in promoting smoking cessation in the context of an expert system intervention; 3) Explore the role of supportive and non-supportive behaviors in relation to both short-term and long-term smoking cessation outcomes in the presence of the expert system intervention. This study will develop a family-assisted intervention in the form of a self-help booklet based on the Transtheoretical Model of Change (TTM) that will aim at teaching the supporters how to use the stages of change framework to apply different strategies that best match with smokers' readiness to quit smoking. This study will conduct focus groups and a pilot study to pre-test the study intervention and study procedures. The main randomized trial will recruit a total of 800 supporters and 800 smokers who are ethnic Chinese residing in the State of California. Each supporter-smoker pair will be randomly assigned to either 1) the expert system intervention only or 2) the expert system plus family-assisted intervention condition after baseline assessment by mail. All smokers in either condition will receive the expert system intervention. Half of the supporters will receive family-assisted intervention materials. All participants will be assessed at baseline, 3, 6, 12, and 18 months by mail or telephone. It is hypothesized that the expert system plus family-assisted intervention condition will yield significantly higher abstinence rates and higher portions to report quit attempts at follow-ups.

Eligibility criteria: Inclusion Criteria:

* self-identified ethnic Chinese
* men and women
* above age 18
* can read and speak Chinese or English
* reside in the State of California at baseline
* to participate as a supporter, the participant must have a targeted smoker who meet the smoker eligibility criteria who provides consent to participate in the study as a smoker participant
* to participate as a smoker, the participant must have smoked at least 100 cigarettes in lifetime and have smoked at least 5 cigarettes in the past 7 days, and have a supporter who provides consent to be a supporter participant

Exclusion Criteria:

* smoker participant currently engage in other smoking cessation programs or efforts

Primary outcomes:
measure: self-report 7-day smoking abstinence
timeFrame: 12 months, 18 months
Secondary outcomes:
measure: self-report of at least a 24-hour quit attempt
timeFrame: 12 months, 18 months
Other outcomes:
Locations:
city: San Francisco
country: United States
facility: UCSF Langley Porter
state: California
Study officials:
affiliation: University of California, San Francisco
name: Janice Tsoh, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Luk JW, Tsoh JY. Moderation of gender on smoking and depression in Chinese Americans. Addict Behav. 2010 Nov;35(11):1040-3. doi: 10.1016/j.addbeh.2010.06.021. Epub 2010 Jun 25.