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Non-governmental organizations (NGOs) and donors often promote certain practices to a community, such as in-facility births and then evaluate the efficacy of those interventions, in part, by surveying those populations. A project to assess the accuracy of birth and death monitoring by local community-based monitors was undertaken with a partner health agency in areas (pop. 94,00 where they supported medical facilities. Thirty clusters of 30 households each were selected at random, probability proportional to size. Half of those househol