Table 6.
Critical appraisal of case control studies using Joanna Briggs Institute (JBI) tools
| Author / Year | ||
|---|---|---|
| Du et al., (2019) [38] | Mansoor et al., (2018) [54] | |
| Q1: Were the groups comparable other than the presence of disease in cases or the absence of disease in controls? | Y | Y |
| Q2: Were cases and controls matched appropriately? | Y | Y |
| Q3: Were the same criteria used for identification of cases and controls? | Y | Y |
| Q4: Was exposure measured in a standard, valid and reliable way? | NA | NA |
| Q5: Was exposure measured in the same way for cases and controls? | NA | NA |
| Q6: Were confounding factors identified? | Y | Y |
| Q7: Were strategies to deal with confounding factors stated? | N | N |
| Q8: Were outcomes assessed in a standard, valid and reliable way for cases and controls? | Y | Y |
| Q9: Was the exposure period of interest long enough to be meaningful? | NA | NA |
| Q10: Was appropriate statistical analysis used? | Y | Y |
Key: Y yes, N no, U unclear, NA not applicable