ID | Total classification | Sequence generation (selection bias) | Allocation concealment (selection bias) | Blinding (performance bias) | Outcome completeness | Selective outcome reporting | Other biases |
---|---|---|---|---|---|---|---|
1 | High | + | ? | + | + | - | - |
2 | Unclear | + | + | + | ? | ? | + |
3 | High | + | + | - | - | + | ? |
4 | High | - | - | ? | ? | + | ? |
5 | High | - | + | + | - | ? | + |
6 | High | - | + | - | - | ? | - |
7 | High | + | + | NA | - | + | + |
8 | High | ? | - | - | + | - | ? |
9 | High | - | - | ? | ? | - | + |
10 | High | - | ? | ? | + | - | ? |
11 | High | NA | NA | NA | - | - | + |
12 | Unclear | NA | NA | NA | + | ? | + |
13 | High | NA | NA | ? | - | - | + |
14 | High | - | - | ? | - | - | ? |
15 | Unclear | ? | ? | + | ? | ? | + |
16 | High | - | - | ? | - | - | ? |
17 | High | NA | NA | - | - | + | ? |
18 | High | - | - | ? | ? | ? | ? |