Quality Assessment of Included Studies
| Risk of bias | Applicability concerns | ||||||
| First author, year | Patient selection | Index test | Reference standard | Flow and timing | Patient selection | Index test | Reference standard |
| Sharma, 2014 (17) | Low | Low | Unclear | Low | High | Low | Low |
| Sun, 2009 (18) | Low | Low | Unclear | Low | High | Low | Low |
| Roedl, 2008 (19) | Low | Low | Unclear | Unclear | Low | Low | Low |
| Guo, 2007 (20) | High | Low | Unclear | Low | High | Low | Low |
| Jadvar, 2006 (21) | Unclear | Low | High | Unclear | High | Low | Low |
| Teyton, 2009 (22) | Low | Low | Unclear | Unclear | Low | Low | Low |
| Kato, 2004 (23) | Low | Low | Unclear | High | Low | Low | Low |
| Flamen, 2000 (24) | Low | Low | Unclear | Low | Low | Low | Low |