J. Med. Internet Res. - Impact of seasonality on recruitment, retention, adherence, and outcomes in a web-based smoking cessation intervention: randomized controlled trial.

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Resumo

CKGROUND: Seasonal variations in smoking and quitting behaviors have been documented, with many smokers seeking cessation assistance around the start of the New Year. What remains unknown is whether smokers who are recruited to cessation treatment trials during the New Year are as motivated to quit, or as likely to enroll in a research trial, adhere to a research protocol, and benefit from a cessation intervention compared to those who are recruited during other times of the year.OBJECTIVE: The objective of this study was to determine whether smokers recruited during the New Year period differ on measures of motivation and desire to quit, recruitment and retention rates, website utilization rates, and short-term cessation outcomes compared to smokers recruited at other times.METHODS: Participants were current smokers who had registered on a free Web-based cessation program (BecomeAnEX.org) and were invited to participate in a clinical trial. The New Year period was defined according to a clear peak and drop in the proportion of visitors who registered on the site, spanning a 15-day period from December 26, 2012 to January 9, 2013. Two other 15-day recruitment periods during summer (July 18, 2012 to August 1, 2012) and fall (November 7, 2012 to November 21, 2012) were selected for comparison. Data were examined from 3 sources: (1) a Web-based clinical trials management system that automated the recruitment and enrollment process, (2) self-report assessments at baseline and 3 months postrandomization, and (3) online tracking software that recorded website utilization during the first 3 months of the trial.RESULTS: Visitors to BecomeAnEX during the New Year period were more likely to register on the site than smokers who visited during summer or fall (conversion rates: 7.4%, 4.6%, 4.9%, respectively; P<.001), but there were no differences in rates of study acceptance, consent, randomization, 3-month follow-up survey completion, or cessation between the 3 periods. New Year participants were older, more educated, more likely to be employed full time, and more likely to have a relationship partner compared with participants recruited at other times during the year, but did not differ on measures of motivation and desire to quit.CONCLUSIONS: Smokers visiting a Web-based cessation program during the New Year period were more likely to register for treatment and differ on several demographic variables, but showed similar patterns of treatment engagement, retention, follow-up, and short-term cessation outcomes compared with participants who visited the site during other periods of the year. These results allay scientific concerns about recruiting participants during this time frame and are reassuring for researchers conducting Web-based cessation trials.

Resumo Limpo

ckground season variat smoke quit behavior document mani smoker seek cessat assist around start new year remain unknown whether smoker recruit cessat treatment trial new year motiv quit like enrol research trial adher research protocol benefit cessat intervent compar recruit time yearobject object studi determin whether smoker recruit new year period differ measur motiv desir quit recruit retent rate websit util rate shortterm cessat outcom compar smoker recruit timesmethod particip current smoker regist free webbas cessat program becomeanexorg invit particip clinic trial new year period defin accord clear peak drop proport visitor regist site span day period decemb januari two day recruit period summer juli august fall novemb novemb select comparison data examin sourc webbas clinic trial manag system autom recruit enrol process selfreport assess baselin month postrandom onlin track softwar record websit util first month trialresult visitor becomeanex new year period like regist site smoker visit summer fall convers rate respect p differ rate studi accept consent random month followup survey complet cessat period new year particip older educ like employ full time like relationship partner compar particip recruit time year differ measur motiv desir quitconclus smoker visit webbas cessat program new year period like regist treatment differ sever demograph variabl show similar pattern treatment engag retent followup shortterm cessat outcom compar particip visit site period year result allay scientif concern recruit particip time frame reassur research conduct webbas cessat trial

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