Table 2.
Studies | Clear criteria for inclusion | Detail description of study subject and setting | Reliability and validity of study tools | Used standard criteria or objective | Identify cofounding factor | Strategy dealing with cofounders | Outcome measured in a valid way | Appropriate statistical analysis used | Overall score (%) |
---|---|---|---|---|---|---|---|---|---|
Belete et al. [40] | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | 100 |
Erku et al. [37] | Yes | Yes | Yes | Yes | Yes | No | Yes | Yes | 87.5 |
Shiferaw et al. [38] | Yes | Yes | Yes | Yes | Yes | No | Yes | Yes | 87.5 |
Solomon et al. [42] | Yes | Yes | Yes | Yes | Yes0 | Yes | Yes | Yes | 100 |
Nega et al. [41] | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | 100 |
Kantelhardt et al. [39] | Yes | Yes | Yes | Yes | Yes | No | Yes | Yes | 87.5 |
Lielt et al. [36] | Yes | No | Yes | Unclear | Yes | Yes | Yes | Yes | 75 |