Clinical trial NCT01248832: Smokers' Quitline for Asian Language Speakers
Official title: Smokers' Quitline for Asian Language Speakers
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Smoking Cessation
Keywords: tobacco cessation
smoking cessation
telephone
self-help
smoking abstinence
tobacco use disorder
disparity
Lead sponsor: University of California, San Diego
Sponsor class: OTHER
Collaborators: name: National Cancer Institute (NCI)
First posted: 2010-11-25
Enrollment: 2277
Sex: ALL
Minimum age (years): 18
Maximum age (years): 75
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: The study tested the effects of telephone counseling for smokers from three Asian language speaking groups: Chinese, Korean, and Vietnamese. The specific aims were to: 1) test the efficacy of a culturally appropriate counseling protocol for smokers calling the California Smokers' Helpline on the Chinese, Korean and Vietnamese lines, 2) examine whether intervention effects varied by cognitive and behavioral predictors of cessation success, 4) examine whether family involvement plays a role in quitting success, and 5) assess differences in counseling effect across the three ethnic groups.

Detailed description: Asian Americans are among the least studied groups in smoking research, which has created a knowledge gap in understanding their behavior and in developing methods to help them quit. No efficacy data have been reported for telephone counseling of smokers who prefer to use Asian languages, although telephone intervention holds promise for these groups because of its convenience and its potential to reach large numbers of smokers. In this two-arm design subjects are stratified by language (Chinese, Korean, and Vietnamese) and randomized to telephone counseling (plus materials) or self-help materials only, which serves as the control. The study is significant in several ways. First, it provides timely information on a cessation approach for a traditionally under-served population (Asian language speakers). Second, effective telephone counseling can be widely applied because of the proliferation of quitlines with centralized services in recent years. Third, by targeting Asian language speakers this study addresses the issue of ethnic disparities, which has been identified by many (including the NCI Bypass Budget) as a research priority.

Eligibility criteria: Inclusion Criteria:

* 18-75 years old,
* daily smoker,
* ready to quit within one month,
* first time caller,
* valid phone number,
* valid address,
* California (CA) resident,
* gave consent to participate in study and evaluation,
* called the Chinese, Korean or Vietnamese line

Exclusion Criteria:

* used other form of tobacco,
* major medical or psychiatric complication (e.g. lung cancer, major depressive disorder, anti-psychotic medicine, recent stroke, impending surgery)

Primary outcomes:
measure: Number of participants who are continuously abstinent from cigarettes
timeFrame: 7-months post enrollment
Secondary outcomes:
measure: Number of participants who are continuously abstinent from cigarettes
timeFrame: 4-months post enrollment
measure: Rate of serious quit attempts
timeFrame: 4-months post enrollment
measure: 30-day point prevalence
timeFrame: 4-months post enrollment
measure: 30-day point prevalence
timeFrame: 7-months post enrollment
measure: Rate of serious quit attempts
timeFrame: 7-months post enrollment
Other outcomes:
Locations:
city: San Diego
country: United States
facility: University of California San Diego
state: California
Study officials:
affiliation: University of California, San Diego
name: Shu-Hong Zhu, Ph.D.
role: PRINCIPAL_INVESTIGATOR
References:
citation: Zhu SH, Wong S, Stevens C, Nakashima D, Gamst A. Use of a smokers' quitline by Asian language speakers: results from 15 years of operation in California. Am J Public Health. 2010 May;100(5):846-52. doi: 10.2105/AJPH.2009.168385. Epub 2010 Mar 18.