Health Education Research Advance Access originally published online on July 2, 2009
Health Education Research 2009 24(6):930-940; doi:10.1093/her/cyp036
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Efficacy of a single computer-tailored e-mail for smoking cessation: results after 6 months
1 Care School for Public Health and Primary Care (CAPHRI), Maastricht University, Maastricht, The Netherlands
2 Department of Health Promotion, Maastricht University, PO Box 616, 6200 MD Maastricht, The Netherlands
3 Faculty of Psychology, Open University of The Netherlands, PO Box 2960, 6401 DL Heerlen, The Netherlands
* Correspondence to: H. de Vries. E-mail: hein.devries{at}gvo.unimaas.nl
To date, few Internet-delivered smoking cessation interventions have been tested. This study tested the efficacy, understandability, credibility and personal relevance of an e-mail-delivered computer-tailored smoking cessation intervention. It included tailored action plan feedback, as recent studies have demonstrated the importance of planning in facilitating quitting smoking. Participants (Dutch adults) were randomly assigned to the intervention (computer-tailored e-mail; N = 224) or the control group (generic, non-tailored e-mail; N = 234). The results 6 months after baseline (N = 195) showed that significantly more participants in the intervention group reported not having smoked in the last 24 hours (21.5%) and 7 days (20.4%) in contrast with participants in the control group (9.8 and 7.8%, respectively). Intention-to-treat analyses revealed similar results, though overall lower quitting percentages. Furthermore, participants in the intervention group appreciated the computer-tailored e-mail significantly more in terms of understandability, credibility and personal relevance. Hence, the computer-tailored intervention is effective for the Dutch smoking population motivated to quit smoking. Further research is needed into the efficacy of the intervention for smokers who are not motivated to quit smoking and into the benefits of (multiple) e-mail-delivered tailored letters with tailored action plan feedback over and above tailoring without action plan feedback.
Received on December 4, 2008; accepted on June 3, 2009