Methods
SECONDARY
This post hoc secondary analysis of the MORDOR trial aimed to examine the association between distance to a primary health center and mortality and to determine the presence of a differential effect of azithromycin MDA on child mortality by distance to a primary health center. This analysis used data from the MORDOR Niger site as well as additional sources to capture relevant spatial information and locations of health facilities in the study area. Verbal consent was obtained from community leaders before study activities commenced and from households before participation in census and intervention activities. For the Niger site, the MORDOR trial was approved by the Niger Ministry of Health and the University of California, San Francisco Human Research Protection Program. Trial oversight was provided by a data and safety monitoring committee. The trial protocol is available in 