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Summary of AUCa values for candidate model.
| Candidate model | Variables, n | AUC, mean (SD) |
| 1 | 1 | 0.908 (0.043) |
| 2 | 2 | 0.912 (0.040) |
| 3 | 3 | 0.913 (0.041) |
| 4 (selected model) | 4 | 0.918 (0.040) |
| 5 | 5 | 0.917 (0.040) |
| 6 | 6 | 0.915 (0.040) |
| 7 | 7 | 0.913 (0.040) |
| 8 | 8 | 0.913 (0.041) |
| 9 | 9 | 0.912 (0.041) |
| 10 | 10 | 0.911 (0.041) |
aAUC: area under the receiver operating characteristic curve.
