Table 2 Summary of risk of bias assessment for non-randomised experimental studies
Study ID | Source | Assessment criterion | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||
Bley [18] | Abstract | Yes | NA | NA | No | Unclear | Unclear | NA | Unclear | NA |
Bohringer [19] | Abstract | Yes | NA | NA | No | No | Unclear | NA | Unclear | Unclear |
Boucher [21] | Full paper | Yes | NA | NA | No | Yes | No | NA | Yes | No |
EUROCORD [22] | Full paper | Yes | NA | NA | No | Yes | Unclear | NA | Yes | No |
Groeschel [16] | Full paper | Yes | Unclear | Unclear | Yes | Unclear | No | No | Yes | Yes |
Kehrer [26] | Full paper | Yes | NA | NA | No | NA | NA | NA | No | Yes |
LDM/1 study [25] | Full paper | Yes | NA | NA | No | Unclear | Unclear | NA | Yes | Yes |
Martin [23] | Full paper | Yes | NA | NA | No | Yes | Yes | NA | Yes | No |
Fumagalli et al. [13] | Full paper | Yes | Yes | Unclear | Yes | Yes | Unclear | Yes | Yes | Yes |
Prasad [24] | Full paper | Yes | NA | NA | No | Yes | Unclear | NA | Unclear | No |
Singh [20] | Abstract | No | NA | NA | No | No | Unclear | NA | Unclear | Unclear |
van Rappard [17] | Full paper | Yes | No | Unclear | Yes | Yes | No | No | Unclear | Unclear |