Quality assessment of included studies based on the Newcastle–Ottawa Scale checklist
Study [ref.] | Selection (maximum of 4 stars) | Comparability (maximum of 2 stars) | Outcome/exposure (maximum of 3 stars) |
Gashimova et al. [66] | ** | * | *** |
Raninen et al. [49] | * | * | * |
Papaefstathiou et al. [41] | ** | * | ** |
Papaefstathiou et al. [67] | * | * | |
Geer et al. [29] | * | * | ** |
Krilaviciute et al. [34] | *** | ** | |
Castellanos et al. [42] | ** | ** | |
Ruzsányi et al. [48] | ** | * | *** |
Capone et al. [68] | * | * | ** |
Chen et al. [39] | ** | ** | ** |
Sukul et al. [33] | * | ** | |
Blanchet et al. [31] | ** | ** | |
Gaida et al. [40] | **** | ** | *** |
Jalali et al. [69] | ** | * | ** |
Raninen et al. [51] | * | * | ** |
Alkhouri et al. [43] | **** | ** | *** |
Jareño-Esteban et al. [70] | ** | * | *** |
Baranska et al. [50] | * | * | ** |
Das et al. [30] | *** | ** | |
Filipiak et al. [27] | ** | * | ** |
de Gennaro et al. [28] | ** | ** | |
Alonso et al. [46] | * | * | |
Buszewski et al. [26] | ** | *** | |
Gordon et al. [71] | * | * | ** |