Table 3 Quality of Included Studies, Using the Newcastle-Ottawa Quality Assessment Scale for Cohort Studies.
Studies | Selection | Comparability | Outcome | Quality score (Number of stars) | |||||
---|---|---|---|---|---|---|---|---|---|
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 | ||
Nkenke22 | * | - | * | * | * | * | * | * | 7 |
Guo24 | * | - | * | * | - | * | * | * | 6 |
Cai20 | * | * | * | * | ** | * | * | * | 9 |
Scolozzi23 | * | * | * | * | - | * | * | * | 7 |
Lauer21 | * | * | * | * | - | * | * | * | 7 |