Table 1. The distributions of characteristics in control subjects and patients with colorectal cancer from the Chinese population.
| Characteristics | Patients (946) | Controls (989) | ||
|---|---|---|---|---|
| N | (%) | N | (%) | |
| Median age (range) | 55 | (20–90) | 58 | (21–90) |
| Age(years) | ||||
| ≤60 | 509 | (53.81) | 523 | (52.88) |
| >60 | 437 | (46.19) | 466 | (47.12) |
| Sex | ||||
| Male | 519 | (54.86) | 535 | (54.10) |
| Female | 427 | (45.14) | 454 | (45.90) |
| Smoking Status | ||||
| Positive | 366 | (38.69) | 399 | (40.34) |
| Negative | 580 | (61.31) | 590 | (59.65) |
| Alcohol consumption | ||||
| Positive | 489 | (51.69) | 525 | (53.08) |
| Negative | 457 | (45.88) | 464 | (46.92) |
| Body mass index (BMI) | ||||
| ≤20 | 202 | (21.35) | 221 | (22.35) |
| 20<BMI<28 | 682 | (72.09) | 723 | (73.10) |
| ≥28 | 62 | (6.55) | 45 | (4.55) |
| Family History of Cancer * | ||||
| Positive | 96 | (10.15) | 116 | (11.73) |
| Negative | 850 | (89.85) | 873 | (88.27) |
| TNM stage | ||||
| I | 84 | (8.88) | ||
| II | 262 | (27.70) | ||
| III | 344 | (36.36) | ||
| IV | 256 | (27.06) | ||
*Family history of all malignant tumors in first degree relatives.