Table 9 Risk of bias of trials of systematic reviews, evaluated with the Cochrane RoB tool (2011), domains I, II, IIIa, IIIb, IV and V
| Â | Mathie (2014) [10] | Mathie (2017) [11] | Cochrane reviews | Non-Cochrane reviews | ||||
|---|---|---|---|---|---|---|---|---|
N systematic reviews | 1 | 1 | 100 | 18 | ||||
N trials | 32 | 75 | 1242 | 424 | ||||
Risk of bias of trials | N | Percent | N | Percent | N | Percent | N | Percent |
A. Low risk | 1 | 3.1% | 3 | 4.0% | 74 | 6.0% | 25 | 5.9% |
B. Uncertain risk | 12 | 37.5% | 27 | 36.0% | 407 | 32.8% | 226 | 53.3% |
C. High risk | 19 | 59.4% | 45 | 60.0% | 761 | 61.3% | 173 | 40.8% |
Total | 32 | 100.0% | 75 | 100.0% | 1242 | 100.0% | 424 | 100.0% |