Author | Random sequence generation | Allocation concealment | Blinding | Incomplete outcome data | Selective reporting | Other bias |
---|---|---|---|---|---|---|
Anner et al. [20] | ? | ? | - | + | ? | + |
Costa et al. [21] | ? | ? | ? | - | ? | + |
Frisch et al. [22] | ? | ? | ? | - | ? | + |
Rinke et al. [23] | ? | ? | ? | + | ? | + |
Roccuzzo et al. [24] | ? | ? | + | + | ? | + |
Roccuzzo et al. [25] | ? | ? | + | + | ? | + |
Roccuzzo et al. [26] | ? | ? | + | + | ? | + |
+ = low risk; ? = unclear risk; - = high risk. |