Table 1.

Distribution of subsite-specific colorectal cancer cases and controls according to history of diabetes

DiabetesControlsProximal colon cancerDistal colon cancerRectal cancer
nnOR (95% CI)*nOR (95% CI)*nOR (95% CI)*
No4,555297161218151
Yes210292.05 (1.33-3.16)411.32 (0.92-1.90)651.59 (1.17-2.15)
  • NOTE: Italy and Switzerland, 1992-2000.

  • * Estimated from multiple logistic regression equations including terms for age, sex, center, education, body mass index, physical activity at work, intake of total energy, fats, fibers, and alcohol, and family history of colorectal cancer in first-degree relatives.

  • Reference category.