Study | Selection | Comparability | Outcome | Score |
---|
 | A | B | C | D | E | F | G | H |  |
---|
Grant 2002 [13] (p) | * | * | * | * | ** | * | * | * | 9* |
Lodise 2007 [16] (R) | * | * | * | * | ** | * | * | * | 9* |
Lorente 2009 [18] (R) | * | * | * | * | ** | * | * | * | 9* |
Rose 2011 [35] (R) | * | * | * | * | ** | * | * | * | 9* |
Yost 2011 [21] (R) | * | * | * | * | * | * | * | * | 8* |
Pereira 2012 [23] (R) | * | * | * | * | ** | * | * | * | 9* |
Lee 2012 [24] (R) | * | * | * | * | ** | – | * | * | 8* |
Waxier 2012 [25] (R) | * | * | * | * | ** | – | * | * | 8* |
Cutro 2014 [27] (R) | * | * | * | * | * | * | * | * | 8* |
Schmees 2016 [31] (R) | * | * | * | * | ** | – | * | * | 8* |
Winstead 2016 [30] (R) | * | * | * | * | ** | – | * | * | 8* |
Fan 2017 [34] (P) | * | * | * | * | ** | – | * | * | 8* |
- (P) = prospective cohort study and (R) = retrospective cohort study
- Selection:
- A: representation of the exposed cohort (yes = *) (no = −), B: selection of non-exposed cohort (yes = *) (no = −), C: ascertainment of exposure (yes = *) (no = −), D: demonstration that outcome of interest was not present at start of study (yes = *) (no = −)
- Comparability:
- E: comparability of cohorts on the basis of the design or analysis [controls for: age, sex and marital status (yes = *) (no = −) and for other factors (yes = *) (no = −)]
- Outcome:
- F: assessment of outcome (yes = *) (no = −), G: was follow up long enough for outcome to occur (yes = *) (no = −) and H: adequacy of follow up of cohorts (yes = *) (no = −).