Table 6.
Critical appraisal of epidemiological studies
| Criterion no. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | % | MA |
| Mulimba 199019 | √ | X | X | √ | √ | √ | NA | NA | X | X | X | X | 40 | N |
| Bezzaoucha 199221 | √ | X | √ | √ | √ | √ | X | NA | NA | √ | X | √ | 70 | Y |
| Bwanahali et al 199222 | X | X | √ | X | X | √ | x | NA | NA | x | x | x | 20 | N |
| Harris 199320 | X | X | √ | √ | √ | √ | X | NA | NA | X | √ | √ | 60 | N |
| Schierhout et al 199329 | √ | √ | √ | √ | √ | √ | X | NA | NA | X | X | √ | 70 | Y |
| Mijiyawa et al 200024 | X | X | √ | X | X | √ | X | NA | NA | X | X | √ | 30 | N |
| Omokhodion et al 200025 | √ | X | √ | √ | √ | √ | X | NA | NA | X | √ | √ | 70 | Y |
| Worku 200011 | √ | X | √ | X | √ | √ | X | NA | NA | X | √ | √ | 60 | N |
| Wallner-Scholtfeldt et al 200030 | X | √ | √ | √ | √ | √ | X | NA | NA | √ | √ | √ | 80 | Y |
| Omokhodion 200226 | √ | √ | √ | √ | √ | √ | X | NA | NA | √ | √ | √ | 90 | Y |
| Mbaye et al 200023 | X | X | √ | √ | √ | √ | X | NA | NA | X | √ | √ | 60 | N |
| Omokhodion et al 200315 | √ | √ | √ | √ | √ | √ | X | NA | NA | X | X | √ | 70 | Y |
| Igumbor et al 200331 | √ | √ | √ | √ | √ | √ | X | NA | NA | X | √ | √ | 80 | Y |
| Omokhodion 200416 | √ | √ | √ | √ | √ | √ | X | NA | NA | X | √ | √ | 90 | Y |
| Go√ender 200432 | √ | √ | √ | √ | √ | √ | X | NA | NA | √ | √ | √ | 90 | Y |
| Puckree et al 200433 | X | X | √ | X | √ | √ | √ | NA | NA | X | X | √ | 50 | N |
| Prista et al 200427 | √ | X | √ | √ | √ | √ | √ | NA | NA | √ | √ | √ | 90 | Y |
| Fabunmi et al 200541 | √ | X | X | √ | √ | √ | √ | NA | NA | √ | √ | √ | 80 | Y |
| Sanya et al 200542 | √ | x | √ | √ | √ | √ | X | NA | NA | X | √ | √ | 70 | Y |
| Bejia (Adol) et al 200534 | √ | √ | √ | √ | √ | √ | √ | NA | NA | √ | √ | √ | 100 | Y |
| Jordaan et al 200528 | √ | √ | √ | √ | √ | √ | √ | NA | NA | √ | √ | √ | 100 | Y |
| Adedoyin et al 200535 | X | √ | √ | X | √ | √ | X | NA | NA | X | √ | √ | 60 | N |
| Bejia (hosp) et al 200536 | √ | √ | √ | √ | √ | √ | X | NA | NA | √ | √ | √ | 90 | Y |
| Van Vuuren et al 200537 | √ | √ | √ | √ | √ | √ | √ | NA | NA | X | √ | √ | 90 | Y |
| Galukande et al 200538 | X | √ | √ | √ | √ | √ | X | NA | NA | √ | √ | √ | 80 | Y |
| Van Vuuren et al 200539 | X | X | √ | √ | √ | √ | X | NA | NA | X | √ | √ | 60 | N |
| Van Vuuren et al 200640 | √ | X | √ | √ | √ | √ | X | NA | NA | X | √ | √ | 70 | Y |
√ = criterion fulfilled Y = Yes MA = methodologically accepted
X = criterion not fulfilled N = No NA = not applicable