Table 2 Risk of bias of selected studies
From: Efficacy of psychological treatment for headache disorder: a systematic review and meta-analysis
Study ID | Randomization process | Deviations from intended interventions | Missing outcome data | Measurement of the outcome | Selection of the reported result | Overall Bias |
|---|---|---|---|---|---|---|
K. A. Foster et al., 2004 | Some concerns | Low | Low | Low | Low | Some concerns |
E. B. Blanchard et al., 1991 | Some concerns | Low | Low | Low | Some concerns | Some concerns |
E. B. Blanchard et al., 1991 | Some concerns | Low | Low | Low | Some concerns | Some concerns |
T. Finn et al., 1991 | Some concerns | Some concerns | Some concerns | Low | Some concerns | Some concerns |
H. Mo’tamedi et al., 2012 | Some concerns | Some concerns | High | Some concerns | Low | High |
D. Kewman et al., 1980 | Low | Some concerns | Some concerns | Some concerns | Low | Some concerns |
A. Kleiboer et al., 2014 | Low | Some concerns | High | Low | Low | High |
P. D’Souza et al., 2008 | Low | Low | Low | Low | Low | Low |
B. Meyer et al., 2016 | Some concerns | Some concerns | Some concerns | Low | Low | Some concerns |
R. E. Wells et al., 2014 | Low | Low | Low | Some concerns | Low | Some concerns |
V. Bembalgi et al., 2012 | Low | Some concerns | Some concerns | Low | Low | Some concerns |
O. Slavin-Spenny et al., 2013 | Low | Some concerns | Some concerns | Some concerns | Low | Some concerns |
H. Mansourishad et al., 2017 | Some concerns | Low | Low | Low | Low | Some concerns |
E. H. Kang et al., 2009 | Some concerns | Some concerns | Some concerns | Some concerns | Some concerns | Some concerns |
P. Bruhn et al., 1979 | Some concerns | Some concerns | High | Some concerns | Some concerns | High |
K. A. Appelbaum et al., 1990 | Some concerns | Some concerns | High | Some concerns | Some concerns | High |
V. Bembalgi et al., 2013 | Low | Some concerns | Some concerns | Low | Low | Some concerns |
P. Martin et al., 2007 | Some concerns | Some concerns | Low | Some concerns | Low | Some concerns |
L. A. Rokicki et al., 1997 | Some concerns | Some concerns | Low | Low | Some concerns | Some concerns |
S. Cathcart et al., 2014 | Low | Some concerns | Low | Low | Low | Some concerns |
J. Gauthier et al., 1983 | Some concerns | Some concerns | Some concerns | Low | Some concerns | Some concerns |
G. Pickering et al., 2012 | Low | Some concerns | Some concerns | Low | Low | Some concerns |
T. Devineni et al., 2005 | Some concerns | Some concerns | Some concerns | Some concerns | Low | Some concerns |
S. Cousins et al., 2015 | Low | Some concerns | Low | Low | Low | Some concerns |
E. Blanchard et al., 1990 | Some concerns | Some concerns | Low | Some concerns | Some concerns | Some concerns |
E. B. Blanchard et al., 1990 | Some concerns | Some concerns | Low | Some concerns | Low | Some concerns |
M. Odawara et al., 2015 | Low | Low | Some concerns | Low | Low | Some concerns |