Sample size (or number of clusters) by treatment arms
20 of the 84 villages were assigned to be pure control villages. In the pure control villages, we randomly selected approximately 15 households to be surveyed.
The remaining randomly chosen 64 villages were grouped into 16 screening sites with four neighbouring villages in each site. In each screening site of four villages, we randomly assigned two villages to be "intense treatment" villages and the other two to be "intense placebo" villages. In the "intense treatment" and "intense placebo" villages, we randomly selected 18 households and randomly assigned 6 households to each of the treatment, placebo and within-village control groups. In addition, in the "intense treatment" villages, we randomly selected 18 additional households (roughly 36 individuals, or 1,152 individuals in total) to be invited to the documentary but did not survey these individuals. In the "intense placebo" villages, we similarly randomly selected 18 additional (non-surveyed) households to be invited to the placebo session.