Table 4 Quality appraisal using CASP checklist for case-control studies
CASP case-control study checklist | |
|---|---|
Amiri et al. 2009 [25] | |
Did the study address a clearly focused issue? | Yes |
Did the authors use an appropriate method to answer their question? | Yes |
Were the cases recruited in an acceptable way? | Yes |
Were the controls selected in an acceptable way? | Yes |
Was the exposure accurately measured to minimise bias? | Yes (but questionnaire completed by midwives) |
Have the authors taken account of the potential confounding factors in the design and/or in their analysis? | Yes |
Were the results and risk estimate precise? | Yes |
Do you believe the results? | Yes |
Can the results be applied to the local population? | Yes |
Do the results of this study fit with other available evidence? | Yes |