Table 2.
Patient demographic characteristics in the external test set
| Characteristics | No. | % | |
|---|---|---|---|
| Age, years (N = 219) | Mean | 46 | |
| SD | 9.53 | ||
| Race(N = 220) | Asian | 220 | 100.00 |
| Marital status (N = 219) | Single | 0 | 0 |
| Married | 208 | 94.98 | |
| Divorced | 9 | 4.11 | |
| Widowed | 2 | 0.91 | |
| Stage (N = 158) | IA | 15 | 9.49 |
| IB | 137 | 86.71 | |
| IIA | 6 | 3.80 | |
| IIB | 0 | 0 | |
| Lymph node metastasis (N = 219) | No metastasis | 193 | 88.13 |
| Metastasis | 26 | 11.87 | |
| Positive lymph node numbers (N = 219) | 0 | 177 | 80.82 |
| 1 | 16 | 7.31 | |
| 2 | 10 | 4.57 | |
| 3 | 6 | 2.74 | |
| 4 | 4 | 1.83 | |
| > = 5 | 6 | 2.74 | |
| Resected lymph node numbers (N = 219) | Mean | 21 | |
| SD | 7.27 | ||
| Tumor diameter, mm (N = 219) | Mean | 28.4 | |
| SD | 1.58 | ||
| Depth of invasion (N = 219) | Inner 1/3 | 103 | 47.03 |
| Middle 1/3 | 21 | 9.60 | |
| Outer 1/3 | 95 | 43.37 | |
| Differentiation (N = 168) | Low | 25 | 14.88 |
| Middle | 76 | 45.24 | |
| High | 67 | 39.88 | |
| Surgery (N = 219) | Local excision | 9 | 4.11 |
| TH | 3 | 1.37 | |
| TH + LND | 2 | 0.91 | |
| TH + BSO + LND | 131 | 59.82 | |
| RTH + BSO + LND | 74 | 33.79 |