Table 2 Risk of bias assessment
Author/Year | Funding bias | Selection bias | Reporting bias | Total score |
|---|---|---|---|---|
Bunn et al., 2014 [15] | 3 | 2 | 2 | 2 |
Glover et al., 2014 [24] | 2 | 3 | 2 | 2 |
Guthrie et al., 2015 [16] | 3 | 2 | 2 | 2 |
Guthrie et al., 2016 [23] | 3 | 3 | 3 | 3 |
Hanney et al., 2007 [13] | 3 | 1 | 2 | 2 |
Hanney et al., 2013 [20] | 3 | 3 | 3 | 3 |
Lichten et al., 2017 [25] | 3 | 3 | 3 | 3 |
McCrae et al., 2012 [22] | 3 | 2 | 3 | 2 |
Morgan Jones et al., 2016 [21] | 3 | 3 | 3 | 3 |
Peckham et al., 2008 [19] | 3 | 3 | 3 | 3 |
Sainty, 2013 [17] | 3 | 3 | 3 | 3 |
Sullivan et al., 2011 [18] | 2 | 1 | 3 | 2 |
Sussex et al., 2016 [14] | 2 | 2 | 1 | 1 |