Table 1.
Patient Characteristics for the Training Set (n = 108) and the Validation Set (n = 44)
| Characteristic | Set 1, n = 108 | Set 2, n = 44 | All, n = 152 | P Values* | |
|---|---|---|---|---|---|
| Age (years) | Mean ± SD | 62.27 ± 8.36 | 64.78 ± 8.32 | 62.99 ± 8.39 | .095 |
| Median | 62.92 | 64.30 | 63.51 | ||
| Range | 39.83-78.08 | 46.3-78.8 | 39.83-78.8 | ||
| Gender | Female | 22 (20%) | 10 (23%) | 32 (21%) | .747 |
| Male | 86 (80%) | 34 (77%) | 120 (79%) | ||
| Histology | SCC | 56 (52%) | 25 (57%) | 81 (53%) | .813 |
| AC | 42 (39%) | 16 (36%) | 58 (38%) | ||
| LCC | 10 (9%) | 3 (7%) | 13 (9%) | ||
| Tumor stage | IA | 21 (19%) | 8 (18%) | 29 (19%) | .806 |
| IB | 30 (28%) | 11 (25%) | 41 (27%) | ||
| IIA | 24 (22%) | 8 (18%) | 32 (21%) | ||
| IIB | 33 (31%) | 17 (39%) | 50 (33%) | ||
| Progression at 3 years | Yes | 45 (42%) | 14 (32%) | 59 (39%) | .258 |
| No | 63 (58%) | 30 (68%) | 93 (61%) | ||
SD, standard deviation. Progression at 3 years: yes: recurrence and/or cancer-related death at 3 years; no: free from recurrence and/or cancer-related death at 3 years.
*
P values were calculated with Pearson's chi-squared test of independence; independent-samples t test for age.