Table 2

Risk of bias summary
Study Allocation (selection bias) Allocation sequence concealment Blinding of participants and staff (performance bias) Blinding of outcome assessment (detection bias) Incomplete outcome data addressed Free of selective reporting Free of other bias
Bhardwaja et al. 2010 [33] Low Unclear Low Low Low Low Unclear
Raebel et al. 2007 [34] Low Unclear Low Unclear Low Low Unclear
Raebel et al. 2007 [20] Low Unclear Low Unclear Low Low Unclear
Humphries et al. 2007 [21] High High High Unclear Low Low Unclear
Mansour et al. 2010 [14] High High High Unclear Low Low Unclear

Ojeleye et al.

Ojeleye et al. BMC Medical Informatics and Decision Making 2013 13:69   doi:10.1186/1472-6947-13-69

Open Data