Authors (Year) | Case–control studies | Focused issue? | Appropriate method? | Acceptable recruitment of cases? | Acceptable controls? | Accurate exposure measurement? | Groups treated equally? | Confounders considered in design/analysis? | Results of study? * | Believe in results? | Results applicable? | Results fit evidence? |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Hall and McMahon (2007) [52] | Case–control study | Y | Y | Y | Y | Y | Y | Y |  | Y | Y | U |
Testa et al. (2018) [53] | Case–control study | Y | Y | Y | Y | Y | Y | Y |  | Y | U | U |