American Cancer Society's QuitLink: Randomized Trial of Internet Assistance
2007
Eligible smokers (N=6,451) visiting the American Cancer Society's Internet
siteoffering cessation assistance were, with informed consent, randomized to receive access either to a static Internet
sitewith quitting advice or to one of five interactive
sitesprovided by cooperating research partners. Three-month follow-up surveys were conducted via online survey with E-mail prompts, or
telephone calls, to assess quitting success; 54% of participants provided follow-up data. Results showed no significant overall difference in cessation rates among participants assigned to the interactive or static
sites. We found large differences in the utilization of the five interactive
sites. When
siteswere grouped by level of use, a significantly higher reported 3-month cessation rate was observed among participants assigned to the more highly utilized
sitesthan among those assigned to the less utilized
sites(12.2% vs. 10.2% of all randomized participants, 26.0% vs. 22.1% of followed participants). These findings show that interactive Internet
sitesyielding high levels of utilization can increase quitting success among smokers seeking assistance via the Internet.
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