Clinical trial NCT00820495: Effectiveness of a Web-Assisted Quitline for Smokeless Tobacco Users
Official title: Effectiveness of a Web-Assisted Quitline for Smokeless Tobacco Users
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE2
Conditions: Tobacco Use Disorder
Keywords: Smokeless tobacco
Chewing Tobacco
Internet
Adolescent
Lead sponsor: Oregon Research Institute
Sponsor class: OTHER
Collaborators: name: National Cancer Institute (NCI)
name: University of California, San Diego
First posted: 2009-01-12
Enrollment: 1683
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: The purpose of this record is to test whether (a) participants who receive a Web-based smokeless tobacco cessation intervention will be more likely to be abstinent than participants who do not receive this intervention, and (b) whether participants who receive a telephone quitline intervention will be more likely to be abstinent than participants who are not in a quitline intervention.

Detailed description: Many Americans engage in the habitual use of smokeless tobacco (ST), and many wish to quit but lack resources. There is a need for innovative, validated, and easily delivered low-cost interventions to facilitate ST cessation in this under-served population of tobacco users. In our current ChewFree study, we have developed a user-friendly, interactive Web-based intervention, and in a randomized trial we have shown this website to be more efficacious than a rigorous control condition that offered Web-based basic textual information on ST cessation. We now seek to extend this proven approach by marrying it with a quitline telephone counseling service that has been used with noteworthy success for smoking abstinence but has not yet been evaluated with ST users. Our 2 x 2 design and large sample size allow us to test both main effects - Web program, phone counseling - as well as explore planned comparisons to examine the value-added contribution of the Web-based intervention to phone counseling, and vice-versa.

This project takes advantage of the opportunity to conduct a study of two tobacco cessation interventions that are growing in use. The use of tobacco help lines is now almost ubiquitous, with more than 30 state and national services now being offered. The use of the Internet for health information and behavior change (including tobacco cessation) has been growing in popularity as well. The proposed project would be an extension of both lines of research, evaluating the relative efficacy of our Internet-based program, telephone counseling, and the combination of both.

We will use a multifaceted promotional plan to recruit more than 2,000 ST users. The recruitment plan builds on the collaborative marketing efforts of a state tobacco control organization and organized promotion through media mailings, on-line advertising, and direct mailing. Follow-up assessment data will be collected electronically via the Internet supplemented by telephone follow-up. Additional data will be derived from phone counselor notes and measures of website usage.

Eligibility criteria: Inclusion Criteria:

* current users of smokeless tobacco products (snuff or chewing tobacco)
* use of smokeless tobacco products for at least 1 year
* use of at least one tin or pouch per week
* interest in quitting all tobacco
* U.S. resident 18 years of age or older
* ability to read English
* willingness to share a phone number, e-mail, and mailing address
* use of personal Internet e-mail account at least once per week
* informed consent

Exclusion criteria:

* none

Primary outcomes:
measure: Prolonged abstinence from all tobacco
timeFrame: 3 months and 6 months
Secondary outcomes:
measure: 7-day point prevalence for smokeless tobacco use
timeFrame: 3 months and 6 months
measure: 7-day point prevalence for all tobacco use
timeFrame: 3 months and 6 months
Other outcomes:
Locations:
city: San Diego
country: United States
facility: University of California, San Diego
state: California
city: Eugene
country: United States
facility: Oregon Research Institute
state: Oregon
Study officials:
affiliation: Oregon Research Institute
name: Herbert H. Severson, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Danaher BG, Severson HH, Zhu SH, Andrews JA, Cummins SE, Lichtenstein E, Tedeschi GJ, Hudkins C, Widdop C, Crowley R, Seeley JR. Randomized Controlled Trial of the Combined Effects of Web and Quitline Interventions for Smokeless Tobacco Cessation. Internet Interv. 2015 May 1;2(2):143-151. doi: 10.1016/j.invent.2015.02.005.