Table 1 Quality assessment of included trials
Author | randomisation sequence | allocation concealment | Assessor blind | Patient blind | Loss to follow up at trial end | Intention to treat | Quality score |
|---|---|---|---|---|---|---|---|
Abt et al [21] | No | No | Yes | Yes | 11% | No | 3 |
Buch et al [27] | Yes | Yes | Yes | Yes | 4% | No | 5 |
Buchbinder et al [10] | Yes | No | Yes | Yes | 6% | Yes | 5 |
Cosentino et al [33] | No | No | Yes | Not stated | Not stated | No | 1 |
Haake et al [11] | Yes | Yes | Yes | Yes | 16% | Yes | 6 |
Krischek et al [22] | No | No | No | Not stated | 6% | No | 1 |
Ogden et al [28] | No | No | Yes | Yes | 1.5% | No | 3 |
Rompe et al [32] | No | No | Yes | Yes | 16% | No | 3 |
Rompe et al [30] | No | No | No | Yes | Not stated | No | 1 |
Rompe et al [31] | No | No | Yes | Yes | 20% | No | 3 |
Speed et al [12] | No | No | Yes | Yes | 14% | Yes | 4 |