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Patient characteristics.
| Total (n = 272) | Training (n = 180) | Validation (n = 92) | p value | |
|---|---|---|---|---|
| Age (years; mean) | 40.1 | 39.2 | 41.9 | 0.054a |
| Sex (male/female) | 169/103 | 111/69 | 58/34 | 0.825b |
| Grade II/Grade III | 179/93 | 123/57 | 56/36 | 0.220b |
| P53 wild type/P53 mutation | 151/121 | 104/76 | 47/45 | 0.293b |
| Tumor location (left/right/bilateral) | 142/113/17 | 95/73/12 | 47/40/5 | 0.306b |
Legends.
T-statistical test.
Chi-square test.
