Table 2.
Characteristics of studies included in the meta-analysis.
| Study | Treatment modality | Study quality rating | Number of sessions | Follow-up (months) |
|---|---|---|---|---|
| (Zhang et al., 2000) | G | 25 (0.595) | 4w | 0 |
| (Wang and Xu, 2005) | G | 22 (0.5) | 6w | 12 |
| (Liu and Yu, 2015) | NA | 23 (0.523) | 4w | 0 |
| (Zhou et al., 2011) | G & I | 24 (0.545) | 8w | 6 |
| (Mao and Xiong, 2007) | NA | 25 (0.595) | 4w | 2 |
| (Yang et al., 2005) | G & I | 25 (0.595) | 8w | 6 |
| (Li and Chen, 2009) | G & I | 26 (0.591) | 4w | 6 |
| (Zhang et al., 2000) | G & I | 26 (0.591) | 4w | 6 |
| (Huang et al., 2017a) | G | 25 (0.595) | 12m | 0 |
| (Huang et al., 2017b) | G | 26 (0.619) | 6m | 0 |
| (Li et al., 2018) | NA | 24 (0.571) | 6w | 0 |
G, intervention administered in a group; I, intervention administered individually; m, months; NA, not available; w, weeks.