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Fig. 4 | BMC Public Health

Fig. 4

From: Impact evaluation of a community engagement intervention in improving childhood immunization coverage: a cluster randomized controlled trial in Assam, India

Fig. 4

Screen shot of intervention (green) and control (red) villages in Udalguri: Potential scenarios of intervention-control contamination and subsequent use of geographical buffer to minimize it. Source: Google Maps. a Original randomization of baseline survey villages. b After discarding villages when intervention and control villages are within 3 KM distance

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BMC Public Health

ISSN: 1471-2458

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