Table 2.
Demographics of Patient Populations
| Characteristics | Training Seta (n = 300) | Testing Seta (n = 185) |
|---|---|---|
| Age (years) | ||
| Mean median ± SD | 61.2 ± 0.4 | 61.5 ± 0.67 |
| Q1(SD)-Q3(SD) | 56.1 (0.32)-65.9 (0.3) | 56.3 (0.64)-66 (0.63) |
| Follow-up (months) | ||
| Mean median ± SD | 27 ± 1.33 | 27.2 ± 2.07 |
| Q1(SD)-Q3(SD) | 14.7 (0.7)-45.1 (1.2) | 14 (1.5)-44.5 (2.1) |
| Recurred | ||
| No (mean ± SD, %) | 245.5 ± 4.8, 82% | 149.5 ± 4.8, 81% |
| Yes (mean ± SD, %) | 53.5 ± 4.8, 18% | 35.5 ± 4.8, 19% |
| Tumor stages | ||
| T2a (mean ± SD, %) | 7.7 ± 2, 2.6% | 5.3 ± 2, 2.9% |
| T2b (mean ± SD, %) | 5.5 ± 1.2, 1.7% | 1.8 ± 1.2, 1% |
| T2c (mean ± SD, %) | 102.1 ± 4.2, 34% | 61.9 ± 4.2, 33.5% |
| T3a (mean ± SD, %) | 94.7 ± 2.8, 31.6% | 60.4 ± 2.8, 32.6% |
| T3b (mean ± SD, %) | 81.6 ± 5.4, 27.2% | 48.4 ± 5.4, 26.2% |
| T4 (mean ± SD, %) | 5.7 ± 1.3, 1.9% | 4.3 ± 1.3, 2.3% |
| Surgical margin | ||
| R0 (mean ± SD, %) | 188 ± 4.5, 62.7% | 121 ± 4.5, 65.4% |
| R1 (mean ± SD, %) | 90.8 ± 4.2, 30.3% | 51.2 ± 4.2, 27.7% |
| R2 (mean ± SD, %) | 2.5 ± 0.7, 0.8% | 2.2 ± 0.8, 1.2% |
| Rx (mean ± SD, %) | 9.8 ± 2.6, 3.3% | 5.2 ± 2.6, 2.8% |
a
Ten random pairs of training and testing sets were generated; all numbers here are the respective means ± SD.