Review Article
Prognostic Models for Predicting Overall Survival in Patients with Primary Gastric Cancer: A Systematic Review
Table 3
Characteristics of model external validations.
| | External validations (n = 32) |
| Data source | | Clinical | 27 | Prospective cohort | 3 | Randomized controlled trial | 2 | Validated in | | The original development study | 22 | Independent study | 10 | Sample size for validation | 610 (71, 26019)a | Discrimination | | AUC/c statistic | 25 | Others | 2 | No | 5 | Calibration | | Calibration plot | 6 | Hosmer–Lemeshow test | 2 | Calibration in large | 1 | No | 24 | Compared validation set with development set | 19 |
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aMedian (min, max). AUC: area under curve.
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