(A) Rural northwest. (B) Rural south. (C) Urban Gaborone. (D) Urban Francistown. (E) Rural east. (F) All regions. Health districts were categorised into five groups: rural northwest (Maun, Okavango, and Chobe health districts), rural south (Ghanzi, Kgalagadi north and south, Kweneng west and east, southern, and Goodhope), urban Gaborone region, urban Francistown region, and rural east (all other health districts). IFAS=iron and folic acid supplementation. MMS=multiple micronutrient supplementation.