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.

The first objective of this study was to analyze the differences between adolescents who use sunscreen frequently and those who do not. The second objective was to explore the importance of specific action plans when planning sunscreen use. Data was gathered among 602 Belgian secondary school students. Frequent and infrequent users of sunscreen were compared on several determinants related with sunscreen use, and a regression analysis on sunscreen use was done. Frequent users of sunscreen measures had significantly higher scores on attitudes, social influence, self-efficacy, some awareness factors, intention, and action plans. The integrated model for exploring motivational and behavioral change (I-Change model) explained 57% of the total variance of using sunscreen every 2 hours. Frequent sunscreen use was most strongly predicted by action plans, followed by positive intentions to use sunscreen, wearing protective clothing, seeking shade, attitude toward sunscreen use, education, social influence, and exposure to the sun. Our results suggest that skin cancer prevention programs aimed at promoting sunscreen use need to emphasize the advantages of sunscreen to infrequent users and to increase feelings of self-efficacy. Moreover, support by friends and parents should be stimulated. Finally, developing specific action plans for the use of sunscreen should be promoted to more effectively translate general intentions into actual sunscreen use. (Cancer Epidemiol Biomarkers Prev 2006;15(7):1360 -6)

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Addressing multiple health behaviours are important in preventing disease and mortality. The present study investigated the clustering of health behaviours, cognitive determinants and stages of change in 2827 adults for the lifestyle factors of physical activity, fruit, vegetable and fat consumption and smoking. The results showed that only 3% of the total population met recommended guidelines for all of the five behaviours. Behaviours were found to be weakly associated. Behaviour-specific cognitions and stages of change for the behaviours clustered more strongly, however. With respect to diet and physical activity, respondents in the preparation stage for one behaviour were likely also to be preparing to change another behaviour. Possible mechanisms for the apparent general willingness to change multiple behaviours are discussed, as well as potential implications for health promotion practice.