Table 2 Risk of bias summary of the included studies using the Quality in Prognosis Studies tool
Study | Study participation | Study attrition | Prognostic Factor Measurement | Outcome measurement | Study confounding | Statistical Analysis and Reporting |
|---|---|---|---|---|---|---|
Tentori et al. 2010 [20] | Low | Low | High | Low | Low | Low |
Lopes et al., 2014 [21] | Low | Unclear | Low | Low | Low | Low |
Kutner et al., 2016 [22] | Low | Unclear | Low | Low | Low | Low |
Zhang et al., 2017 [23] | Moderate | Low | Low | Low | Moderate | Low |
Matsuzawa et al., 2018 [24] | Moderate | Unclear | Low | Low | Low | Low |
Johansen et al., 2019 [25] | Low | Unclear | Low | Low | Low | Low |
Stack et al., 2005 [26] | Moderate | Low | High | Low | Low | Low |
Brar et al., 2019 [27] | Moderate | Low | Low | Low | Low | Low |
Zelle et al., 2011 [28] | Low | Unclear | Low | Low | Low | Low |
Rosas et al., 2012 [29] | Low | Unclear | Moderate | Low | Low | Low |
Byambasukh et al., 2020 [19] | Low | Low | Low | Low | Low | Low |