Table 7. JBI critical appraisal tool for case-control studies.
Checklist question | Belayneh et al. [22] |
Were the groups comparable other than the presence of disease in cases or the absence of disease in controls? | Y |
Were cases and controls matched appropriately? | Y |
Were the same criteria used for the identification of cases and controls? | Y |
Was exposure measured in a standard, valid, and reliable way? | Y |
Was exposure measured in the same way for cases and controls? | Y |
Were confounding factors identified? | Y |
Were strategies to deal with confounding factors stated? | Y |
Were outcomes assessed in a standard, valid, and reliable way for cases and controls? | Y |
Was the exposure period of interest long enough to be meaningful? | Y |
Was appropriate statistical analysis used? | Y |