Fig. 1

Stepped-wedge schema for the trial. Six clusters were enrolled at baseline. The white (non-shaded) cells marked āCā represent the control period. The gray (shaded) cells marked āIā represent the intervention period
Stepped-wedge schema for the trial. Six clusters were enrolled at baseline. The white (non-shaded) cells marked āCā represent the control period. The gray (shaded) cells marked āIā represent the intervention period