Table 2 Characteristics of CRC study patients
From: Case-only study of interactions between metabolic enzymes and smoking in colorectal cancer
Gender | Â |
   Male | 105(50.7%) |
   Female | 102(49.3%) |
Age (years) | Â |
   < 54 | 28(13.5%) |
   54–60 | 40(19.3%) |
   61–71 | 70(33.8%) |
   > 71 | 69(33.3%) |
Cigarette smoking | Â |
   Non-smoker | 123(59.4%) |
   Smoker | 84(40.6%) |
History (pack-years) | Â |
≤ 35 | 51(24.6%) |
> 35 | 31(15.0%) |
No response | 2 (1%) |
Alcohol consumption | Â |
   Non-drinker | 147(71.0%) |
   Moderate drinker (< 50 g ethanol/day) | 35(16.9%) |
   Heavy drinker (≥ 50 g ethanol/day) | 24(11.6%) |
   No response | 1 (0.5%) |