Table 1.
Clinicopathological characteristics of participants in TCGA cohort
| Characteristics | Groups | Patients | ||
|---|---|---|---|---|
| Total (N = 368) | Training dataset (N = 184) | Validation dataset (N = 184) | ||
| Sample (n, %) | Sample (n, %) | Sample (n,%) | ||
| Age at diagnosis | Median (IQR) | 67.00 (58.00, 73.00) | 67.50 (58.00, 73.00) | 66.00 (58.00, 73.00) |
| Sex | Female | 123 (33.4) | 62 (33.7) | 61 (33.2) |
| Male | 245 (66.6) | 122 (66.3) | 123 (66.8) | |
| Live status | Living | 226 (61.4) | 113 (61.4) | 113 (61.4) |
| Death | 142 (38.6) | 71 (38.6) | 71 (38.6) | |
| Pathologic T | T1–2 | 93 (25.3) | 44 (23.9) | 49 (26.6) |
| T3–4 | 275 (74.7) | 140 (76.1) | 135 (73.4) | |
| Pathologic N | N0 | 113 (30.7) | 58 (31.5) | 55 (29.9) |
| N1–3 | 255 (69.3) | 126 (68.5) | 129 (70.1) | |
| Pathologic M | M0 | 334 (90.8) | 165 (89.7) | 169 (91.8) |
| M1–3 | 34 (9.2) | 19 (10.3) | 15 (8.2) | |
| Pathological stage | I–II | 166 (45.1) | 86 (46.7) | 80 (43.5) |
| III–IV | 202 (54.9) | 98 (53.3) | 104 (56.5) | |
| Histologic grade | G1–2 | 139 (37.8) | 70 (38.0) | 69 (37.5) |
| G3–4 | 229 (62.2) | 114 (62.0) | 115 (62.5) | |
| Histological type | Diffuse | 78 (21.2) | 39 (21.2) | 39 (21.2) |
| Intestinal | 171 (46.5) | 86 (46.7) | 85 (46.2) | |
| NOS | 119 (32.3) | 59 (32.1) | 60 (32.6) | |
| Anatomic subdivision | Antrum | 134 (36.4) | 66 (35.9) | 68 (37.0) |
| Cardia | 49 (13.3) | 27 (14.7) | 22 (12.0) | |
| Fundus | 134 (36.4) | 66 (35.9) | 68 (37.0) | |
| GEJ | 42 (11.4) | 20 (10.9) | 22 (12.0) | |
| NOS | 9 (2.4) | 5 (2.7) | 4 (2.2) | |