Study | Sample randomizationa | Inclusion criteriab | Confounding factors/biasc | Outcome criteriad | Comparison group descriptione | Sampling timingf | Participants withdrawalg | Outcome measurementh | Data synthesisi | Inclusionj | Total score |
---|---|---|---|---|---|---|---|---|---|---|---|
Kaji et al. [22] | Yes | Yes | Unclear | Yes | Yes | Yes | No | Yes | Yes | Yes | 8 |
Pittock et al. [23] | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | 10 |
Tao et al. [20] | Yes | Yes | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | Yes | 9 |
Burbaud et al. [24] | Yes | Yes | Unclear | Yes | Yes | Yes | No | Yes | Yes | Yes | 8 |
Johnson et al. [21] | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes | Yes | Yes | 9 |
Yes = 1; no/unclear = 0 |