Table 2.
Critical appraisal of the longitudinal cohort and case-control studies included for analysis
References | Analytical breadtha | Analytical deptha | Selectionb | Comparabilityb | Outcome/Exposureb | Totalc |
---|---|---|---|---|---|---|
Cohorts | ||||||
Barnett and Brennan (1998)[40] | ** | *** | ** | ** | ** | 5;6 |
Bromet et al. (1988)[39] | ** | ** | ** | ** | *** | 4;7 |
Fuhrer et al. (1999)[131] | *** | *** | * | ** | * | 6;4 |
Griffin et al. (2002)[37] | ** | ** | ** | ** | * | 4;5 |
Marchand et al. (2005)[12] | *** | *** | *** | ** | ** | 6;7 |
Niedhammer et al. (1998)[38] | ** | ** | * | ** | * | 4;4 |
Revicki et al. (1993)[129] | * | * | * | ** | * | 2;4 |
Shields (1999)[132] | ** | ** | *** | ** | ** | 4;7 |
Shields (2002) [130] | ** | *** | ** | ** | ** | 5;6 |
Smith et al. (2008)[133] | *** | ** | ** | ** | ** | 5;6 |
Stansfeld et al. (1998)[134] | *** | *** | * | ** | ** | 6;5 |
Wickrama et al. (2007)[36] | ** | * | * | * | ** | 3;4 |
Case-control | ||||||
Ostry et al. (2006)[35] | * | * | ** | ** | ** | 2;6 |
Note. Full details on the scoring system are presented in Additional file 2.
a Criterion considered for the conceptual assessment of the study quality.
b Criterion considered for the methodological assessment of the study quality.
c Total scores were obtained by summing the number of stars allocated to the conceptual and methodological components of the critical appraisal respectively.