A statewide approach to adolescent tobacco-use prevention: The Minnesota-Wisconsin Adolescent Tobacco-Use Research Project

Impact of A Smoking Prevention Interactive Experience (ASPIRE), an interactive, multimedia smoking prevention and cessation curriculum for culturally diverse high-school students

“…Despite the limitations of the current study, the findings are encouraging. They suggest that the ASPIRE curriculum provides an efficacious computer-based preventive option for schools, most of which do not currently offer effective curriculum-based interventions aimed at smoking prevention (McCormick, Steckler, & McLeroy, 1995;Murray et al, 1988;Wiehe et al, 2005). Because of the small sample of smokers in the current study, conclusions regarding the impact of the program on smoking cessation are limited.…”

Planning for the appropriate analysis in school-based drug-use prevention studies.

“…For the ANCOVA, we have assumed that the error variance could be reduced by 50% by using the baseline smoking status and two other variables as covariates (e.g, age and gender). For the stratified analysis, we have assumed 5 The hypothesized treatment effect (33% reduction), follow-up prevalence rate in the control group (15%), Type I and II error rates, and 2-year follow-up period are taken from the Minnesota-Wisconsin Adolescent Tobacco-Use Research Project (Murray et al, 1988). The within-person variance for a categorical variable was estimated as <r w 2 = pq, where p was the proportion of smokers, q was the proportion of nonsmokers, and q = 1 -p. In this case the prevalence of smoking in the control group at posttest was projected at 15%, whereas the prevalence of smoking in the treatment group was projected at 10%, for an average of 12.5%.…”

“…The essential features in the nested cross-sectional design are that different persons are measured at each measurement occasion and that groups rather than individuals are assigned to conditions. A recent application of this design is the Minnesota–Wisconsin Adolescent Tobacco-Use Research Project (Murray et al, 1988).…”

“…5The hypothesized treatment effect (33% reduction), follow-up prevalence rate in the control group (15%), Type I and II error rates, and 2-year follow-up period are taken from the Minnesota–Wisconsin Adolescent Tobacco-Use Research Project (Murray et al, 1988). The within-person variance for a categorical variable was estimated as σ w 2 = pq , where p was the proportion of smokers, q was the proportion of nonsmokers, and q = 1 − p .…”