Table 4 Comparison of methodological quality domains between studies, n (%)
Studies | Allocation concealment | Randomization explained | Blinding/masking | |
|---|---|---|---|---|
| Â | Â | Â | Generic | Detailed |
Current study ( n = 271) | 32 (11.8) | 84 (31.0) | 102 (37.6) | 57 (21.0) |
Mann (2011) ( n = 129)[24] | - | 0 (0.0) | - | 21 (16.3) |
Wang (2010) ( n = 345)[22] | 0 (0.0) | 17 (4.9) | 39 (11.3) | 1 (0.3) |
Berwanger (2009) ( n = 227)[12] | 1 (0.4) | - | 92 (40.5) | 21 (9.2) |
Hopewell (2006) ( n = 37)[25] | 0 (0.0) | 26 (70.3) | - | 6 (16.2) |