Table 2.
Quality evaluation of the included studies.
| Study | Random allocation | Distribute hide | Baseline similar | Subjects were blinded | Withdrawal rate <15% | ITT intentional treatment analysis | Statistical analysis between groups | Point measurements and variance magnitudes | Total |
|---|---|---|---|---|---|---|---|---|---|
| Ko et al. (16) | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 6 |
| Nemoto et al. (17) | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 6 |
| Lamina et al. (18) | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 5 |
| Ng et al. (19) | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 6 |
| Cornelissen et al. (20) | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 5 |
| Tsai et al. (21) | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 6 |
| He et al. (22) | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 6 |
| Zaleski et al. (23) | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 6 |
| Wong and Figueroa (24) | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 5 |
| Dobrosielski et al. (25) | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 6 |
| Huiming and Qian (26) | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 8 |
| Jin-tao (27) | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 6 |
| Yan (28) | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 6 |
| Hua et al. (29) | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 7 |
| Shengli (30) | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 6 |
| Guirong et al. (31) | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 6 |
| Siu et al. (32) | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 6 |
| Dos Santos et al. (33) | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 6 |
| Headley et al. (34) | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 7 |