| Incidence rate ratio*(95% CI) | |||
---|---|---|---|---|
 | 1991-1994 | 1995-1998 | 1999-20002 | 2003-2006p-trend |
All Africa | 1 (reference) | 1.78(1.68 to 1.87) | 2.35(2.24 to 2.47) | 2.24(2.13 to 2.36).000 |
Sub-regions | Â | Â | Â | Â |
Eastern Africa | 1 (reference) | 1.51(1.42 to 1.61) | 1.59(1.49 to 1.69) | 1.37(1.28 to 1.47).000 |
Western Africa | 1 (reference) | 1.90(1.59 to 2.26) | 2.71(1.30 to 3.20) | 2.94(2.50 to 3.46).000 |
Southern Africa | 1 (reference) | 3.17(2.76 to 3.63) | 6.38(5.61 to 7.25) | 6.46(5.69 to 7.35).000 |
Middle Africa | 1 (reference) | 1.86(1.53 to 2.50) | 2.51(2.09 to 3.02) | 2.69(2.24 to 3.22).000 |
Northern Africa | 1 (reference) | 1.18(0.62 to 2.25) | 1.18(0.62 to 2.25) | 1.18(0.62 to 2.25).950 |