Fig. 1From: Effectiveness and safety of misoprostol distributed to antenatal women to prevent postpartum haemorrhage after child-births: a stepped-wedge cluster-randomized trialStepped-wedge schema for the trial. Six clusters were enrolled at baseline. The white (non-shaded) cells marked “C” represent the control period. The gray (shaded) cells marked “I” represent the intervention periodBack to article page