ClinicalTrials.gg
CompletedNCT01639079TC5RedesUpdated Nov 15, 2018

Comparison of Internet Stop Smoking Intervention to Usual Care on Smoking Cessation at 6 Months

An interventional study of Internet Smoking Cessation Web Site in Cigarette Smoking and Nicotine Dependence, sponsored by University of California, San Francisco. Completed at 1 site in United States. Open to participants aged 18 Years to 90 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2018-11-15.

Sponsored by University of California, San Francisco · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
146
Allocation
Randomized
Ages
18 Years to 90 Years
Sex
All
01

Study summary

The primary goal of this project is to carry out a randomized controlled trial (RCT) comparing quit rates of a Spanish/English stop smoking Web site to those of a no-intervention or "quit on your own" control. The investigators have not included a no-intervention condition in previous Web studies and although 20% of participants quit smoking at one year are 20%, obtaining evidence that the investigators interventions yield higher abstinence rates than a no-intervention control is the next logical step. Furthermore, although the investigators Web site was designed in English and Spanish, the investigators success in attracting the U.S. Hispanic/Latino (HL) population in either language has been limited, so this project only will only conduct intensive telephone follow-up of HL smokers and add new recruitment methods to do so.

Read the detailed description

The main study will randomize participants to one of two conditions, an intervention condition ("immediate") and a no-intervention control ("delayed"). For the control "quit on your own" condition, we will offer a 6-month "Delayed" treatment condition (DC) and will inform participants that we are testing whether smokers who are motivated enough to seek Internet information on smoking cessation can quit on their own at the same rate as smokers who are given access to an interactive stop smoking Web site. For our intervention, the "Immediate" treatment condition (IC) is the UCSF Spanish/English Stop Smoking research Web site (www.stopsmoking.ucsf.edu) that provides smokers their preference of all elements tested in earlier trials: 1) a Web version of a National Cancer Institute-designated evidence-based intervention with updated content, the Guía para Dejar de Fumar; 2) A document summarizing pharmacological treatment to aide smoking cessation available over the counter such as nicotine gum or patch or by prescriptions from a clinician; 3) e-mail reminders to return to the site timed to individually set quit dates; 4) a mood management smoking cessation intervention; and 5) a virtual group (an asynchronous bulletin board designed to let participants provide mutual support). We will recruit study participants until we have randomized 1200 HL smokers in English or Spanish stratified by gender within language group. Participants will be followed at 1, 3, 6, and 12 months after randomization to obtain self-reported prolonged abstinence and 7- and 30-day time point prevalence rates. E-mail reminders will be sent to remind participants to return to the site to complete follow-up surveys online. Only HL smokers from the US will be followed up by telephone calls at 1 and 6 months. The main comparison measure will be cessation at 6 and 12 months from original randomization. DC participants will be able to access the interactive site after finishing the 6-month follow-up. We plan to attract Spanish-speaking HL participants to our Web site using Spanish-language TV and radio interviews and public service announcements (PSA), Spanish-language Google ads and networking with U.S. cessation groups.

02

Conditions studied

  • Cigarette Smoking
  • Nicotine Dependence

Keywords

  • cigarette smoking behavior
  • smoking cessation
  • Latino smoking cessation
03

In context

Cigarette Smoking

132 studies on the registry are indexed under Cigarette Smoking; 60 are open to participants now.

This study's enrollment of 146 is above the median of 94 across 114 interventional studies indexed under Cigarette Smoking.

Browse Cigarette Smoking studies →

Lead sponsor

University of California, San Francisco is the lead sponsor of 2,164 studies on the registry; 368 are open to participants now.

Of its 267 completed or terminated interventional studies of FDA-regulated products, 199 (75%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 90 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • age 18 or older
  • daily (smoking one or more cigarettes per day) or non-daily (smoke some days) smoker
  • planning to quit within the next month
  • have a valid e-mail address so to send a password required to consent online.
  • speak English or Spanish
  • consent to participate

Exclusion criteria

Exclusion Criteria:

  • does not speak English or Spanish
  • age younger than 18 years
  • non-smoker
  • no valid email address

Note - You do not need to contact anyone to begin this study. Please access the following URLs to participate: English: www.stopsmoking.ucsf.edu Spanish: https://www.stopsmoking.ucsf.edu/es/intro/home.aspx

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
146 participants (actual)

Study arms

  • No intervention
    Usual Care for Smoking

    Usual care for smoking cessation with access to the web site after 6 months

  • Experimental
    Internet Smoking Cessation Web Site

    Internet Stop Smoking site (TC5) offers a menu of several intervention elements from which the participants may choose as many as they wish. The links (URLs) to register for the study are: English: www.stopsmoking.ucsf.edu Spanish: https://www.stopsmoking.ucsf.edu/es/intro/home.aspx

    Behavioral: Internet Smoking Cessation Web Site

Interventions

  • BehavioralInternet Smoking Cessation Web Site

    Internet Stop Smoking site (TC5) with several intervention elements from which the participants may choose as many as they wish. The links (URLs) to register for the study are: English: www.stopsmoking.ucsf.edu Spanish: https://www.stopsmoking.ucsf.edu/es/intro/home.aspx

    Also known as: Tomando Control, UCSF Stop Smoking Web Site

06

What researchers measure

Primary outcomes

  1. smoking abstinence

    no cigarettes smoked in the week and/or month prior to completion of the follow-up survey

    Time frame: 6 months

Secondary outcomes

  1. Smoking fewer cigarettes

    Reduction in the average number of cigarettes smoked per day

    Time frame: 6 months

07

Study locations

1 site
  • University of California, San Francisco
    San Francisco, California 94143-0320, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 15, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01639079
Responsible party
Sponsor
First posted
Jul 12, 2012
Start date
Jun 2012
Primary completion
Apr 2016
Completion
Apr 2016
Last update
Nov 15, 2018

Study contacts

Ricardo F. Muñoz, PhD
principal investigator · University of California, San Francisco

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Nov 2018. You cannot join it, but the record below documents what was studied.

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