Fig. 3From: A review of geospatial methods for population estimation and their use in constructing reproductive, maternal, newborn, child and adolescent health service indicatorsEstimated district coverage maps of diphtheria, pertussis and tetanus vaccine third dose (DTP3) and measles first dose (MCV1) for Nigeria. Numerator: DTP3 and MCV1 vaccination doses from DHMISs, as reported to the WHO (maps a, b, c, d, e and f) [38]. Denominators: official population projection from the last census as reported to WHO (map a and d) [38]; WorldPop modelled top-down population estimate (map b and e) [23]; and GRID3 modelled bottom-up population estimate (map c and f) [36, 40]Back to article page