Table 2 Patient characteristics in cohort 2
| Cohort 2 |
IS group (n = 189) |
NIS group (n = 103) |
Χ square test p-value | |
|---|---|---|---|---|
| Sex | Male | 134 (70.9) | 72 (69.9) | 0.858 |
| Female | 55 (29.1) | 31 (30.1) | ||
| Age (years)a | < 60 | 60 (31.8) | 38 (36.8) | 0.199 |
| 60–69 | 68 (36.0) | 42 (40.8) | ||
| 70–81 | 61 (32.3) | 23 (22.3) | ||
| Histologic type | Differentiated | 71 (37.6) | 39 (37.9) | 0.906 |
| Undifferentiated | 117 (61.9) | 63 (61.2) | ||
| Others | 1 (0.5) | 1 (1.0) | ||
|
Cancer stageb (Japanese Classification) | II | 64 (33.9) | 25 (24.3) | 0.226 |
| IIIA | 73 (38.6) | 44 (42.7) | ||
| IIIB | 52 (27.5) | 34 (33.0) | ||
| Time from surgery to relapse (years) | < 1 y | 56 (29.6) | 41 (39.8) | 0.078 |
| ≥ 1 y | 133 (70.4) | 62 (60.2) | ||
| Site of first relapsec | Local | 16 (8.5) | 2 (1.9) | 0.027 |
| Lymph nodes | 51 (27.0) | 24 (23.3) | 0.491 | |
| Peritoneum | 79 (41.8) | 55 (53.4) | 0.057 | |
| Hematogenous | 63 (33.3) | 36 (35.0) | 0.780 | |
