References | 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 | Score |
---|---|---|---|---|---|---|---|---|---|
Wang [13] | * | * | * | * | ** | * | * | – | 8 |
Luo [14] | * | * | * | * | ** | * | * | – | 8 |
Thorsen [15] | – | – | * | * | * | * | * | * | 6 |
Kim [16] | * | * | * | * | ** | * | * | – | 8 |
Yadav [17] | * | * | * | * | * | * | * | – | 7 |
Aleknavičius [18] | * | * | * | * | * | * | – | – | 6 |
Courdi [19] | – | – | * | * | * | * | * | – | 5 |
Chang [20] | * | * | * | * | * | * | * | – | 7 |
Hennequin [21] | * | * | * | * | * | * | * | – | 7 |
Olson [22] | * | * | * | * | * | * | * | – | 7 |
Stemmer [23] | * | * | * | * | * | * | * | * | 8 |
Obedian [24] | * | * | * | * | * | * | * | – | 7 |