Table 1.
Characteristics of study subjects.
| Variable | Cases (n = 242) N (%) | Controls (n = 294) N (%) | p | |
|---|---|---|---|---|
| Sex | Male | 174 (71.9) | 175 (59.5) | 0.03 a |
| Female | 68 (28.1) | 119 (40.5) | - | |
| Mean (SD) | 54.9 (12.5) | 58.4 (16.4) | 0.005 b | |
| Age (years) | ≤60 | 155 (64.0) | 146 (49.7) | 0.179 |
| >60 | 87 (36.0) | 148 (50.3) | - | |
| Tumor sites | Non-cardiac | 24 (9.9) | - | - |
| Cardiac | 218 (90.1) | - | - | |
| Histological types | Well | 21 (8.7) | - | - |
| Moderate | 42 (17.4) | - | - | |
| Poor | 132 (54.5) | - | - | |
| Signet ring cell | 19 (7.8) | - | - | |
| Unclassified | 28 (11.6) | - | - | |
| Clinical stage (TNM) | I | 19 (7.9) | - | - |
| II | 49 (20.2) | - | - | |
| III | 119 (49.2) | - | - | |
| IV | 55 (22.7) | - | - | |
| Depth of invasion c | T1 | 26 (10.7) | - | - |
| T2 | 64 (26.4) | - | - | |
| T3 | 104 (43.0) | - | - | |
| T4 | 48 (19.8) | - | - | |
a
Two-sided test χ2;
b
T test;
c
T1 Lamina propria or submucosa; T2 Muscularis propria or subserosa; T3 Serosa (visceral peritoneum) without invasion of adjacent structures; T4 Adjacent structures.