Audiovisual and printed technology to prevent childhood diarrhea: A clinical trial.

Objective: To compare the effect of using an educational booklet and a video alone or together in promoting maternal self-efficacy to prevent childhood diarrhea.

Design And Sample: Randomized multicenter clinical trial with 522 mothers of children under 5 years of age from northeastern Brazil. They were allocated into eight groups, according to the city: metropolis - video alone (N = 61), booklet alone (N = 60), booklet and video along (N = 60), without intervention (N = 60); countryside - booklet alone (N = 70), video alone (N = 70), booklet and video along (N = 71), without intervention (N = 70).