Case-control studies remain a cornerstone of observational epidemiology, enabling efficient investigation of associations between exposures and rare or costly outcomes. At their heart lies the careful ...

We used a case–control study design. Cases were selected from 445 Chinese Han miners who participated in occupational health checkups diagnosed with dyslipidemia in a Chinese coal mine enterprise from ...

Bhattacharya attacked study's test-negative design, a staple of vaccine effectiveness rese ...