Flow diagram of the progress of clusters and of the individuals within the clusters throughout the study. Figures in parentheses indicate number of women, mean number of women per cluster, minimum and maximum number of women in a cluster. Phase 1: Prior to intervention implementation; Phase 2: After implementation of intervention in Group A units; Phase 3: After implementation of intervention in Group B units. In Phases 2 and 3, a period of three months was allowed for the PEARLS-QI intervention to be cascaded in all clusters. Recruitment duration varied between matched cluster pairs depending on the size of the cluster.
Ismail et al. BMC Medicine 2013 11:209 doi:10.1186/1741-7015-11-209