Effectiveness of an online multi-module intervention on dietary behavior, smoking cessation, and physical activity
AbstractBackground: Online interventions are proven effective in changing lifestyle behaviors and therefore can be beneficial for cancer survivors. We assessed the online â€˜Kanker Nazorg Wijzer (KNW)â€™ (Cancer Aftercare Guide) on diet, physical activity, and smoking outcomes. Methods: Survivors participated in a RCT (intervention [IC]: n = 232, 79.3% females, mean age 55.6 years; usual-care control [UC]: n = 231, 80.5% females; mean age 56.1 years). We analyzed baseline and 6 months data (n=325; 70.2%) obtained from online questionnaires using multilevel analysis. Findings: IC reported significant higher vegetable (B = 14.08, p = .003) and whole wheat bread (B = 0.43, p = .05) consumption and a nearly significant increase in days per week activity (IC = .34 days, UC = .20 days; B = .29, p = .09). A higher proportion of smokers (11.1%) quit smoking in IC (UC = 3.1%). Comparative tests were impossible due to the small numbers. Discussion: Preliminary results indicate the KNW to be effective in changing dietary behavior. Trend effects on physical activity might consolidate over time, simultaneously with a decrease of possible medical complaints.