Table 2 Summary of studies included (n = 67)
Characteristics | Number of studies |
|---|---|
Year of publication | Â |
 January 2000–December 2010 | 22 (32.8%) |
 October 2011–January 2022 | 45 (67.2%) |
Study location | Â |
 South Africa | 16 (23.9%) |
 Ethiopia | 11 (16.4%) |
 Uganda | 6 (9.0%) |
 Nigeria | 5 (7.5%) |
 Kenya | 5 (7.5%) |
 Mauritius | 3 (4.5%) |
 Mozambique | 3 (4.5%) |
 Tanzania | 3 (4.5%) |
 Sudan | 2 (2.9%) |
 Cameroon | 2 (2.9%) |
 Congo | 2 (2.9%) |
 Ghana | 1 (1.5%) |
 Lesotho | 1 (1.5%) |
 Mali | 1 (1.5%) |
 Angola | 1 (1.5%) |
 Zimbabwe | 1 (1.5%) |
 Swaziland | 1 (1.5%) |
 Malawi | 1 (1.5%) |
 Benin | 1 (1.5%) |
 Madagascar | 1 (1.5%) |