Table 2.
Methodological quality of studies.
| Studies | Pedro scale | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | Total | Type | |
| Adie et al. (34) | Yes | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 8 | H |
| Ballaster et al. (35) | Yes | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 5 | F |
| Barzel et al. (36) | Yes | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 8 | H |
| Choudhury et al. (37) | Yes | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 8 | H |
| Cramer et al. (38) | Yes | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 8 | H |
| Dos-Sanrtose-fontes et al. (39) | Yes | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 8 | H |
| Duncan et al. (17) | Yes | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 8 | H |
| Emmerson et al. (40) | Yes | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 7 | H |
| Hara et al. (41) | Yes | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 5 | F |
| Hsieh et al. (18) | Yes | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 5 | F |
| Kimberly et al. (42) | Yes | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 6 | H |
| MIchielsen et al. (44) | Yes | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 8 | H |
| Mortensen at al. (43) | Yes | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 8 | H |
| Nijenhuis et al. (45) | Yes | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 6 | H |
| Prion et al. (46) | No | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 7 | H |
| Saadatnia et al. (9) | Yes | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 5 | F |
| Standen et al. (47) | No | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 6 | H |
| Stinear et al. (49) | Yes | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 5 | F |
| Street et al. (48) | Yes | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 6 | H |
| Sullivan et al. (50) | Yes | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 7 | H |
| Tariah et al. (51) | Yes | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 6 | H |
| Turton et al. (52) | Yes | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 7 | H |
| Wei et al. (8) | Yes | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 7 | H |
| Wolf et al. (53) | Yes | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 7 | H |
| Zondervan et al. (54) | Yes | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 6 | H |
| Zondervan et al. (55) | Yes | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 6 | H |
1, eligibility criteria; 2, random allocation; 3, concealed allocation; 4, baseline comparability; 5, blind participants; 6, blind therapist; 7, blind assessor; 8, adequate follow-up; 9, intention to treat; 10, between group comparison; 11, point estimate variability. Quality: High Quality (H), Fair Quality (F), Low Quality (L).