Table 1. Distributions of selected variables in HCC cases and cancer-free controls.
| Variables | Cases n (%) | Controls n (%) | Pa |
|---|---|---|---|
| All patients | 1032 | 1060 | |
| Age (year) | 0.105 | ||
| <= 48 | 525 (50.9) | 577 (52.4) | |
| > 48 | 507 (49.1) | 483 (45.6) | |
| Sex | 0.642 | ||
| males | 901 (87.3) | 933 (88.0) | |
| females | 131 (12.7) | 127 (12.0) | |
| Smoking status | < 0.0001 | ||
| never | 653 (63.3) | 892 (84.2) | |
| ever | 379 (36.7) | 168 (15.8) | |
| Alcohol use | < 0.0001 | ||
| never | 688 (66.7) | 919 (90.8) | |
| ever | 344 (33.3) | 141 (13.3) | |
| HBV infection | < 0.0001 | ||
| (−) | 170 (16.5) | 962 (90.8) | |
| (+) | 862 (83.5) | 98 (9.2) |
Note: HBV, hepatitis B virus; HCC, hepatocellular carcinoma;
a
Two-sided chi-square test for distributions between cases and controls.