Item | Chen, 2015 | Ko, 2009 |
---|---|---|
Representativeness of the exposed cohort | - | * |
Selection of the non-exposed cohort | * | * |
Ascertainment of exposure | * | * |
Demonstration that outcome of interest was not present at start of study | - | - |
Comparability of cohorts on the basis of the design or analysis | -- | -- |
Assessment of outcome | * | * |
Was follow-up long enough for outcomes to occur | * | * |
Adequacy of follow up of cohorts | * | * |