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Fig. 2 | BMC Public Health

Fig. 2

From: Promoting parent-child relationships and preventing violence via home-visiting: a pre-post cluster randomised trial among Rwandan families linked to social protection programmes

Fig. 2

Cluster sampling strategy and flow chart of participants in the Sugira Muryango trial. cPW = expanded public works; cPW = classic public works. Note: Although each cluster had a 50% chance of being assigned to receive treatment, we were not guaranteed an equal number of treatment and control clusters because randomisation occurred within relatively small strata that sometimes contained an odd number of clusters

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