Table 3. Quality assessment of studies using the Quality Assessment of Diagnostic Accuracy Studies-2 (n = 13).
| Study | Risk of bias | Applicability concerns | Study quality | |||||
|---|---|---|---|---|---|---|---|---|
| Patient selection | Index test | Reference standard | Flow and timing | Patient selection | Index test | Reference standard | ||
| Schnettler and Wallace [16] | Unclear | High | Unclear | Low | High | Low | High | Low |
| Radhakrishnan et al. [9] | Unclear | High | Unclear | Low | High | Low | High | Low |
| Calil et al. [18] | Unclear | High | Unclear | High | High | Low | High | Low |
| Karayilmaz and Kirzioglu [4] | Unclear | High | Unclear | Low | High | Low | High | Low |
| Siddheswaran et al. [11] | Unclear | High | Unclear | Low | High | Low | High | Low |
| Kosturkov et al. [22] | Unclear | High | Unclear | Low | High | Low | High | Low |
| Kataoka et al. [23] | Unclear | High | Unclear | Low | High | Low | High | Low |
| Khademi et al. [24] | High | High | Low | Low | High | Low | High | Low |
| Kosturkov et al. [25] | Unclear | High | Unclear | Low | High | Low | High | Low |
| Kosturkov and Uzunov [26] | Unclear | High | Unclear | Low | High | Low | High | Low |
| Souza et al. [27] | Unclear | Unclear | Unclear | Low | High | Low | High | Low |
| Solda et al. [29] | Unclear | High | Unclear | Low | High | Low | High | Low |
| Lima et al. [30] | Unclear | High | Low | Low | High | Low | High | Moderate |