Table 4 Study quality characteristics
Study (first author, year) | Inclusion/exclusion criteria | Randomization described | Allocation concealment | Blinding | Intent to treat analysis | Loss to follow up described | Loss to follow up (%) | Jaded scoring |
|---|---|---|---|---|---|---|---|---|
Beasley (2008) [20] | Yes | Unclear | No | Unclear | Yes | Yes | Not reported | 2 |
Haapala (2009) [21] | Yes | Unclear | Yes | Unclear | Yes | Yes | 27% - EG | 3 |
35% - control | ||||||||
Patrick (2009) [22] | Yes | Unclear | Yes | No | Yes | Unclear | Not reported | 2 |
Burke (2012) [23] | Yes | Yes | Unclear | Unclear | Yes | Yes | 13.9% - EG | 3 |
13.2% - CG | ||||||||
Shapiro (2012) [25] | Yes | Yes | Yes | Yes | Yes | Yes | 30% - EG | 3 |
18% - CG | ||||||||
Carter (2013) [24] | Yes | Unclear | Unclear | Yes | Yes | Yes | 7% - EG | 2 |
47% - CG |