Fig. 1

Distribution of the age at first sex by region, country, and sex. The median of each distribution is shown with the vertical lines. Estimates are for the birth cohort turning fifteen in 2015 and assumed age 23 years at survey report. Within each region, countries sequenced by increase median female AFS. Numerical values and 95% uncertainty intervals for estimates are reported in Supplemental Table S3. Country names and region allocations corresponding to the three-letter are ISO 3166-1 alpha-3 code labels were as follows: Western Africa: BEN – Benin; BFA – Burkina Faso; CIV – Cote d’Ivoire; GHA – Ghana; GIN – Guinea; GMB – Gambia; GNB – Guinea-Bissau; LBR – Liberia; MLI – Mali; NER – Niger; NGA – Nigeria; SEN – Senegal; SLE – Sierra Leone; TGO – Togo; Middle Africa: AGO - Angola; CAF - Cent. Afr. Republic; CMR - Cameroon; COD - Dem. Rep. Congo; COG - Congo; GAB - Gabon; STP - Sao Tome and Principe; TCD - Chad; Eastern Africa: BDI - Burundi; COM - Comoros; ERI - Eritrea; ETH - Ethiopia; KEN - Kenya; MDG - Madagascar; MOZ - Mozambique; MWI - Malawi; RWA - Rwanda; SDN - Sudan; SSD - South Sudan; TZA - Tanzania; UGA - Uganda; ZMB - Zambia; ZWE - Zimbabwe; Southern Africa: BWA - Botswana; LSO - Lesotho; NAM - Namibia; SWZ - Eswatini; ZAF - South Africa (also in Supplemental Table S4)