Table 2 Results of Quality Appraisal using the Quality In Prognosis Studies (QUIPS) Tool Summary
Author, year | Study participation | Study attrition | Prognostic factor measurement | Outcome measurement | Study confounding | Statistical analysis/reporting |
|---|---|---|---|---|---|---|
Bruggeman 2007, Australia [28] | moderate | high | moderate | low | moderate | Low |
Cristancho 2016, USA [15] | low | high | moderate | low | high | moderate |
Deng, 2005, Taiwan [29] | low | high | high | high | high | high |
Langer 2015, USA [30] | moderate | high | low | low | high | moderate |
Lenze, 2007, USA [13] | low | low | low | low | moderate | moderate |
Lenze, 2008, USA [31] | low | moderate | low | low | low | moderate |
Lenze, 2005, USA [32] | low | low | low | low | high | high |
Liu 2018, Taiwan [33] | low | moderate | moderate | low | moderate | high |
Matheny, 2011, USA [34] | low | high | moderate | low | low | high |
Shyu 2009, Taiwan [10] | low | low | moderate | low | high | high |
Van der Ree, 2020, Netherlands [14] | low | moderate | low | low | high | low |
Voshaar 2007, the Netherlands [35] | low | moderate | moderate | low | high | moderate |