A Parenting Behavior Intervention (the Strengthening Families Program) for Families: Noninferiority Trial of Different Program Delivery Methods.

The home-use DVD shows that it is possible to effectively deliver an affordable family-based intervention using alternative technology outside of the traditional group-based class format. In almost all of the comparisons, the DVD conditions outperformed the group norms, underscoring that low-cost DVDs or viewing the videos on the Web may provide a useful surrogate for costly group-based formats. Future studies may want to improve on the quasi-experimental design by examining programmatic differences based on delivery format using a randomized controlled trial, thus strengthening the causal framework regarding program effects. In addition, the assessment protocol relied on retrospective reporting, which, although this can limit response shift bias, does not separate data collection in time as with a true pre- and posttest design.