Table 1 Comparisons of general characteristics and living habits between cases and controls
From: Genetic polymorphisms in XRCC1 genes and colorectal cancer susceptibility
General characteristic | Control (%) | Case (%) | χ 2 value | OR | 95 % CI |
|---|---|---|---|---|---|
Number of subjects | 350 | 320 | |||
Age group: | |||||
≤60 years | 170 (48.6) | 152 (47.5) | 1 | – | – |
>60 years | 180 (51.4) | 168 (52.5) | 0.077 | 1.04 | 0.77–1.41 |
Gender | |||||
Female | 153 (43.7) | 129 (40.3) | 1 | – | – |
Male | 197 (56.3) | 191 (59.7) | 0.794 | 1.15 | 0.85–1.56 |
Family history of tumors: | |||||
No | 328 (93.7) | 267 (83.4) | 1 | – | – |
Yes | 22 (6.30) | 53 (16.6) | 17.76 | 2.96 | 1.76–4.99 |
Smoking history: | |||||
No | 215 (61.4) | 178 (55.6) | 1 | – | – |
Yes | 135 (38.6) | 142 (44.4) | 2.322 | 1.27 | 0.93–1.73 |
Total smoking amount: | |||||
Never smoking | 215 (61.4) | 178 (55.6) | 1 | – | – |
Slight smoking | 84 (24.0) | 62 (19.4) | 0.344 | 0.89 | 0.61–1.31 |
Heavy smoking | 51 (14.6) | 80 (25.0) | 9.783 | 1.89 | 1.27–2.84 |
Alcohol drinking: | |||||
No | 290 (82.9) | 247 (77.2) | 1 | – | – |
Yes | 60 (17.1) | 73 (22.8) | 3.377 | 1.43 | 0.97–2.09 |