Table 2.

Relative risk for colorectal cancer by fish intake

Fish intake (times per week)
Ptrend
<11 to <22 to <5≥5
Cases5416224341
Person-years35,661116,957182,66840,886
Age-adjusted RR (95% CI)1.000.93 (0.68-1.26)0.88 (0.66-1.18)0.69 (0.46-1.03)0.05
Multivariate adjusted RR* (95% CI)1.000.88 (0.65-1.20)0.82 (0.61-1.10)0.63 (0.42-0.95)0.02
  • Abbreviation: RR, relative risk.

  • * Multivariate model adjusted for age, smoking (never smoked, past smoking, and current smoking), BMI (<23, 23-24.99, 25-26.99, and ≥27), multivitamin use (never use, past use, and current use), history of diabetes, random assignment to aspirin or placebo, vigorous exercise (<1 time per week, 1 to 4 times per week, and ≥5 to 6 times per week), alcohol intake (≤1 time per week, 2-6 times per week, and ≥1 time per day), and quartile of red meat intake.