Fig. 1: High-frequency treatment effects during the intervention period.

Dashed vertical lines represent each of the four messages delivered to the apartments. The figure plots the 3-day running mean treatment effects for each day during the 4-week intervention period for each group that received intervention, as estimated by Eq. (2). Driscoll and Kraay standard errors were used. Errors were not clustered, given that the randomization was performed at the apartment level.