Table 1

Potential risk factor characteristics of cases and control subjects

Cases (n = 146)Controls (n = 228)OR (CI)a (adjusted for age and gender)b
Female24%37%0.5(0.3–0.9)
NSAID use19%40%0.5 (0.3–0.7)
Routine screening30%55%0.3(0.2–0.5)
Family history (1st-degree relative)15%12%1.4(0.7–2.5)
Age (yrs)58(46,70)c57(46,71)c1.1 (0.6–2.0)
Body mass index26(22,32)26 (21,32)1.2 (0.8–2.2)
Smoking(pack-years)4 (0,57)0 (0,33)1.6 (1.2–2.2)
Physical activity (h/week)6 (0,18)7 (1,16)1.1(0.7–1.6)
Calorie intake (kcal)1488 (1043,2617)1488(943,2349)1.2 (0.8–2.2)
Alcoholic beverage intake(g/day)144 (0,755)117 (0,732)1.3 (0.8–1.7)
Fat intake (g/day)48 (28,94)50 (22,80)1.4(0.9–2.4)
Fruit/fruit juice intake (g/day)196(58,510)235 (65,499)0.8 (0.5–1.4)
Vegetable intake(g/day)176 (78,282)180 (97,308)0.7(0.4–1.1)
  • a ORs for age, body mass index, smoking, calorie, alcoholic beverage, fat, fruit/fruit juice, vegetable intakes were for 90th versus 10th percentiles.

  • b Age and gender were adjusted for each other.

  • c Median value (10th and 90th percentile).