Table 1.
Clinical characteristics of the study population
| Characteristic | Cases (n = 390) | Controls (n = 390) | P |
|---|---|---|---|
| Age | |||
| Median, years (IQR) | 59 (50‐69) | 59 (50‐69) | 0.893 |
| Gender | |||
| Male | 261 (66.9) | 261 (66.9) | 1.000 |
| Female | 129 (33.1) | 129 (33.1) | |
| BMI | |||
| Median, kg/m2 (IQR) | 24.5 (22.3‐27.7) | 24.5 (22.6‐27.4) | 0.953 |
| Cigarette smoking status, n (%) | |||
| Never | 245 (63.0) | 254 (65.1) | 0.533 |
| Ever | 144 (37.0) | 136 (34.9) | |
| Alcohol consumption, n (%) | |||
| Never | 299 (76.9) | 220 (56.4) | <0.001 |
| Ever | 90 (23.1) | 170 (43.6) | |
| Hypertension, n (%) | |||
| No | 214 (54.9) | 280 (71.8) | <0.001 |
| Yes | 176 (45.1) | 110 (28.2) | |
| Diabetes, n (%) | |||
| No | 314 (80.7) | 352 (90.3) | <0.001 |
| Yes | 75 (19.3) | 38 (9.7) | |
| Stage, n (%) | |||
| I‐II | 300 (80.9) | ||
| III‐IV | 71 (19.1) | ||
| Grade, n (%) | |||
| I‐II | 243 (73.2) | ||
| III‐IV | 89 (26.8) | ||
| Follow‐upa, n (%) | |||
| Recurrence | 20 (7.2) | ||
| Deaths | 9 (3.2) | ||
BMI, body mass index; IQR, interquartile range.
P < 0.05 are in boldface.
a
With median follow‐up of 19.6 mo.