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Table 2 The demographic characteristics of CRC cases and controls and the prevalence rates of alcohol consumption by subgroup among cases and controls in the NL population-based case-control study of CRC in 1999-2003

From: Interaction between alcohol drinking and obesity in relation to colorectal cancer risk: a case-control study in Newfoundland and Labrador, Canada

Demographics Case Control Case Drinkersb Control Drinkers
  N %a N %a N % (95% CI) N % (95% CI)
Age group         
20-54 186 26.5 185 25.8 126 67.7 (± 6.7) 131 70.8 (± 6.5)
55-64 242 34.5 264 36.8 154 63.6 (± 6.0) 174 65.9 (± 5.7)
65-74 274 39.0 268 37.4 152 55.5 (± 5.9) 148 55.2 (± 5.9)
Sex         
Female 276 39.3 293 40.9 97 35.1 (± 5.6) 114 38.9 (± 5.6)
Male 426 60.7 424 59.1 335 78.6 (± 3.9) 339 80.0 (± 3.9)
Region   *       
Urban 302 43.0 353 49.2 196 64.9 (± 5.4) 237 67.1 (± 4.9)
Rural 400 57.0 364 50.8 236 59.0 (± 4.8) 216 59.3 (± 5.0)
Education   ***       
High school or less 446 63.53 349 48.68 251 56.2 (± 4.5) 201 57.6 (± 5.2)
College+ 256 36.47 368 51.32 181 70.7 (± 5.6) 252 68.5 (± 4.8)
Marital status         
Married 540 76.92 579 80.75 364 64.9 (± 4.9) 382 65.9 (± 3.8)
Single/div./sep./wid. 162 23.08 138 19.25 86 53.1 (± 7.7) 71 51.4 (± 8.3)
Family history of CRC   ***       
No 540 76.92 614 85.63 342 63.3 (± 4.1) 394 64.1 (± 3.8)
Yes 162 23.08 103 14.37 90 55.5 (± 7.7) 59 57.2 (± 9.5)
Diabetes   ***       
No 555 79.06 623 86.89 97 35.1 (± 5.6) 114 38.9 (± 5.6)
Yes 147 20.94 94 13.11 335 78.6 (± 3.9) 339 80.0 (± 3.9)
Any laxatives use   ***       
No 573 81.62 657 91.63 97 35.1 (± 5.6) 114 38.9 (± 5.6)
Yes 129 18.38 60 8.37 335 78.6 (± 3.9) 339 80.0 (± 3.9)
Obesity   *       
No (BMI < 30) 503 71.7 556 77.5 295 58.6 (± 4.3) 359 64.6 (± 4.0)
Yes (BMI ≥ 30) 199 28.4 161 22.5 137 68.6 (± 6.2) 94 58.4 (± 7.6)
Cigarette smoking   ***       
No 201 28.6 170 37.7 70 34.9 (± 6.7) 127 47.0 (± 5.9)
Yes 501 71.4 447 62.3 362 72.3 (± 4.0) 326 72.9 (± 4.1)
Cholesterol level   **       
Low 494 70.4 451 62.9 303 61.3 (± 4.3) 286 63.4 (± 4.4)
High 208 29.6 266 37.1 129 62.0 (± 6.6) 167 62.8 (± 5.8)
Aspirin   *       
No 522 74.4 492 68.6 306 58.6 (± 4.2) 306 62.2 (± 4.3)
Yes 180 25.6 225 31.4 126 70.0 (± 6.7) 147 65.3 (± 6.2)
Fruits daily   ***       
≤ 2 servings 519 73.9 471 65.7 312 60.1 (± 4.2) 295 62.6 (± 4.3)
3+ servings 183 26.1 246 34.3 120 65.6 (± 6.9) 158 64.0 (± 7.8)
Calcium pills/tablets   ***       
No 608 86.6 568 79.2 386 63.5 (± 4.8) 383 67.4 (± 3.8)
Yes 94 13.4 149 21.8 46 48.9 (± 10.1) 70 47.0 (± 8.0)
Total 702 100.0 717 100.0 432 61.5 (± 3.6) 453 63.2 (± 3.6)
  1. aColumn% and X 2: *P < 0.05 **P < 0.01 ***P < 0.001
  2. bNumber, percentage of drinkers and 95% CI of the percentage