Study | Risk of bias | Applicability concerns | |||||
---|---|---|---|---|---|---|---|
Patient selection | Index test | Reference standard | Flow and timing | Patient selection | Index test | Reference standard | |
Akolekar (2011) [19] | High | High | Unclear | Unclear | High | Low | Unclear |
Banch-Clausen (2014) [6] | Low | Low | Low | Low | Unclear | Low | Low |
Chitty (2014) [16] | Low | Low | Low | Low | Low | Low | Low |
Finning (2008) [17] | Low | Low | Low | Low | Low | Low | Low |
Grande (2013) [25] | Low | Low | Low | Low | Low | Low | Low |
Soothill (2015) [18] | Low | Unclear | Low | Low | Low | Low | Low |
Thurik (2015) [7] | Low | High | Low | High | Low | Low | Low |
Wikman (2012) [20] | Low | Low | Low | Low | Unclear | High | Low |