Table 1.

Description of Utah and Kaiser Permanente Medical Care Program Population

Colon
Rectal
CasesControlsCasesControls
n (%)n (%)n (%)n (%)
Age (y)
    50108 (8.0)163 (10.6)147 (15.4)178 (14.8)
    50-64475 (32.3)489 (31.7)412 (43.3)496 (41.2)
    65-79763 (56.7)892 (57.8)393 (41.3)531 (44.1)
Gender
    Men756 (56.2)845 (54.7)559 (58.7)673 (55.9)
    Women590 (43.8)699 (45.3)393 (41.3)532 (44.2)
Race/ethnicity
    White1,167 (86.8)1,360 (88.2)767 (81.6)999 (83.9)
    Hispanic82 (6.1)104 (6.7)72 (7.7)91 (7.6)
    African American95 (7.1)78 (5.1)38 (4.0)50 (4.2)
    Asian0053 (5.6)47 (3.9)
    Native American0010 (1.1)4 (0.3)
Family history of colorectal cancer
    Yes200 (14.9)134 (8.7)103 (10.8)99 (8.2)
    No1,146 (85.1)1,410 (91.3)849 (89.2)1,106 (91.8)
IGF1
    192/192433 (37.0)479 (40.9)327 (42.1)399 (40.5)
    192/non-192567 (48.5)533 (45.5)348 (44.8)450 (45.7)
    Non-192170 (14.5)159 (13.6)102 (13.1)136 (13.8)
IGFBP3
    CC303 (25.9)340 (29.2)221 (28.4)267 (27.0)
    AC613 (52.4)565 (48.6)384 (49.3)517 (52.3)
    AA253 (21.6)258 (22.2)174 (22.3)205 (20.7)
IRS1
    GG998 (84.5)1,031 (88.4)681 (87.2)873 (88.4)
    GR176 (14.9)131 (11.2)98 (12.6)109 (11.0)
    RR7 (0.6)4 (0.3)2 (0.3)6 (0.6)
IRS2
    GG467 (46.5)481 (41.2)325 (42.4)421 (42.8)
    GD409 (40.7)552 (47.3)343 (44.8)423 (43.0)
    DD128 (12.8)134 (11.5)98 (12.8)139 (14.1)