| Colon | p | Rectum | p | ||
---|---|---|---|---|---|---|
Control | Case | Control | Case | |||
n = 1,900 | n = 1,543 | n = 912 | n = 712 | |||
n (%) | n (%) | n (%) | n (%) | |||
Age | ||||||
 30–39 | 40 (2.1) | 23 (1.5) |  | 17 (1.9) | 19 (2.7) |  |
 40–49 | 127 (6.7) | 100 (6.5) |  | 100 (11.0) | 85 (11.9) |  |
 50–59 | 315 (16.6) | 289 (18.7) |  | 230 (25.2) | 188 (26.4) |  |
 60–69 | 651 (34.2) | 535 (34.7) |  | 316 (34.7) | 236 (33.2) |  |
 70–79 | 767 (40.4) | 596 (38.6) |  | 249 (27.3) | 184 (25.8) |  |
 Mean | 65.0 | 64.88 | NA | 62.2 | 61.46 | NA |
Center | Â | Â | Â | Â | Â | Â |
 Utah | 347 (18.3) | 250 (16.2) | NA | 343 (37.6) | 248 (34.8) | NA |
 KPMCP | 760 (40.0) | 720 (46.7) |  | 569 (62.4) | 464 (65.2) |  |
 Minnesota | 793 (41.7) | 573 (37.1) |  | NA | NA |  |
Race/ethnicity | ||||||
 NHW | 1,773 (93.3) | 1,417 (91.8) | NA | 782 (85.8) | 589 (82.7) | NA |
 Hispanic | 72 (3.8) | 56 (3.6) |  | 63 (6.9) | 57 (8.0) |  |
 Black | 55 (2.9) | 70 (4.5) |  | 40 (4.3) | 28 (3.9) |  |
 Asian | NA | NA |  | 27 (3.0) | 38 (5.3) |  |
Sex | ||||||
 Male | 1,010 (53.2) | 862 (55.9) | NA | 512 (56.1) | 427 (60.0) | NA |
 Female | 890 (46.8) | 681 (44.1) |  | 400 (43.9) | 285 (40.0) |  |
Aspirin/NSAID use | ||||||
 No recent use | 1,099 (58.3) | 1,042 (68.3) | <0.0001 | 497 (55.0) | 449 (63.0) | 0.0005 |
 Recent use | 787 (41.7) | 485 (31.8) |  | 407 (45.0) | 257 (36.4) |  |
Family history of CRC, n (%) | ||||||
 Yes | 180 (9.5) | 251 (16.3) | <0.0001 | 76 (8.3) | 83 (11.7) | 0.03 |
 No | 1,720 (90.5) | 1,292 (83.7) |  | 836 (91.7) | 629 (88.3) |  |
Total energy intake (kcal) | 2,320 | 2,451 | 0.0005 | 2,595 | 2,752 | 0.02 |
Long term PAI | ||||||
 Mean | 7.0 | 6.5 | <0.0001 | 7.6 | 7.0 | 0.0004 |
BMI | ||||||
 – | 26.7 | 27.8 | <0.0001 | 27.4 | 27.7 | 0.18 |
Fat/fatty acid intake | (g) | (g) | Â | (g) | (g) | Â |
 Total fat | 84.1 | 91.5 | <0.0001 | 103.2 | 111.2 | 0.02 |
 SFA | 31.3 | 34.0 | 0.0002 | 34.8 | 37.6 | 0.02 |
 MUFA | 30.3 | 33.1 | <0.0001 | 37.0 | 40.1 | 0.01 |
 PUFA | 15.8 | 17.0 | 0.0001 | 23.7 | 25.1 | 0.07 |
 LA | 13.9 | 15.0 | 0.0001 | 21.1 | 22.4 | 0.09 |
 AA | 0.14 | 0.2 | <0.0001 | 0.12 | 0.14 | 0.0002 |
 EPA | 0.02 | 0.02 | 0.60 | 0.02 | 0.02 | 0.22 |
 DHA | 0.08 | 0.08 | 0.25 | 0.08 | 0.09 | 0.07 |
 n-3 PUFA | 1.8 | 1.9 | 0.0003 | 2.4 | 2.6 | 0.01 |
Dietary cholesterol (mg) | 275 | 308 | <0.0001 | 305 | 351 | <0.0001 |