Region | Country | Survey (n) | Survey period | Sample size | Annualised year average (%) |
Central Africa | Chad | 3 | 2004–2015 | 34 139 | 13.91 (9.60–18.86) |
Central Africa | Central African Republic | 2 | 2006–2010 | 24 219 | 3.02 (0.00–11.20) |
Central Africa | Cameroon | 1 | 2004 | 2975 | 0.71 (0.43–1.04) |
East Africa | Tanzania | 4 | 1996–2016 | 28 718 | 3.17 (0.78–7.10) |
East Africa | Somalia | 1 | 2006 | 3716 | 45.99 (44.39–47.59) |
East Africa | Somalia north-east | 1 | 2011 | 5813 | 30.60 (29.43–31.79) |
East Africa | Ethiopia | 3 | 2000–2016 | 22 885 | 34.12 (15.12–56.26) |
East Africa | Kenya | 4 | 1998–2014 | 18 917 | 10.42 (2.52–22.79) |
East Africa | Djibouti | 1 | 2006 | 1923 | 48.52 (46.29–50.75) |
East Africa | Somaliland | 1 | 2011 | 5729 | 27.70 (26.55–28.87) |
East Africa | Eritrea | 2 | 1995–2002 | 6609 | 67.01 (58.02–75.41) |
North Africa | Sudan | 3 | 1990–2014 | 41 131 | 41.90 (30.88–53.36) |
North Africa | Egypt | 7 | 1995–2015 | 85 036 | 28.40 (16.41–42.18) |
West Africa | Burkina Faso | 4 | 1999–2010 | 33 021 | 28.00 (15.16–43.01) |
West Africa | Guinea | 4 | 1999–2016 | 26 576 | 50.35 (44.75–55.95) |
West Africa | Ghana | 1 | 2011 | 8276 | 0.40 (0.27–0.55) |
West Africa | Benin | 4 | 2001–2014 | 34 399 | 1.80 (0.25–4.68) |
West Africa | Senegal | 7 | 2005–2016 | 37 087 | 12.96 (8.63–18.03) |
West Africa | Niger | 2 | 1998–2006 | 7521 | 5.67 (0.00–25.15) |
West Africa | Guinea-Bissau | 3 | 2006–2016 | 23 414 | 34.29 (28.63–40.19) |
West Africa | Mauritania | 4 | 2001–2015 | 34 100 | 61.20 (53.61–68.53) |
West Africa | Sierra Leone | 3 | 2006–2010 | 24 268 | 24.67 (8.87–45.18) |
West Africa | Mali | 6 | 1996–2015 | 67 404 | 72.59 (69.98–75.13) |
West Africa | Togo | 3 | 2006–2014 | 16 777 | 0.53 (0.21–0.97) |
West Africa | Cote d'Ivoire | 4 | 1999–2016 | 19 837 | 13.61 (9.25–18.65) |
West Africa | Gambia | 2 | 2006–2010 | 21 972 | 53.43 (32.14–74.08) |
West Africa | Nigeria | 7 | 1999–2017 | 104 030 | 18.83 (14.66–23.39) |
Western Asia | Yemen | 2 | 1997–2013 | 16 037 | 6.31 (0.00–28.23) |
Western Asia | Iraq | 1 | 2011 | 8759 | 21.00 (20.15–21.85) |