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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
  1. The Italic type meant: this part of data had statistical significance