Table 1.
Demographic characteristics of probands and unaffected siblings
| Characteristics | Sibling N=362 | Proband N=577 | Colon Cancer N=351 | Rectal Cancer N=151 |
|---|---|---|---|---|
| Age | 59.3 (0.6) | 60.0 (0.5) | 60.2 (11.6) | 59.4 (11.0) |
| Gender | ||||
| Male | 168(46.3) | 302(52.3) | 159 (45.3) | 94 (62.3) |
| Female | 195(53.7) | 275(47.7) | 192 (54.7) | 57 (37.7) |
| Race | ||||
| Caucasian | 299 (82.6) | 425(73.7) | 266 (75.8) | 108 (71.5) |
| African American | 19 (5.3) | 54(9.4) | 32 (9.1) | 11 (7.3) |
| Hispanic | 27 (7.4) | 53(9.2) | 30 (8.6) | 15 (9.9) |
| Asian | 7 (1.9) | 19(3.3) | 9 (2.6) | 8 (5.3) |
| Others | 10 (2.8) | 26(4.5) | 14 (4.0) | 9 (6.0) |
| Mean servings of red meat per week | 4.4 (4.1) | 5.5 (6.5) | 5.2 (6.0) | 6.0 (8.1) |
| Mean servings of cooked red meat per week | 3.6 (3.7) | 4.5 (6.2) | 4.3 (5.7) | 5.0 (7.7) |
| Doneness of red meat on the outside | ||||
| Lightly browned | 69 (19.2) | 98 (17.0) | 52 (14.9) | 34 (22.5) |
| Medium browned | 187 (51.9) | 298 (51.8) | 187 (53.6) | 74 (49.0) |
| Heavily browned | 104 (28.9) | 179 (31.1) | 110 (31.5) | 43 (28.5) |
| Doneness of red meat on the inside | ||||
| Red (rare) | 52 (14.4) | 66 (11.5) | 34 (9.7) | 24 (15.9) |
| Pink (medium) | 139 (38.5) | 231 (40.2) | 144 (41.3) | 62 (41.1) |
| Brown (well-done) | 170 (47.1) | 278 (48.3) | 171 (49.0) | 65 (43.0) |
| Mean servings of cooked poultry per week | 2.1 (3.1) | 2.0 (3.1) | 2.0 (3.0) | 2.3 (3.6) |
| Doneness of poultry on the outside | ||||
| Lightly browned | 109 (30.2) | 176 (30.7) | 123 (35.1) | 34 (22.8) |
| Medium browned | 165 (45.7) | 256 (44.6) | 148 (42.3) | 72 (48.3) |
| Heavily browned | 87 (24.1) | 142 (24.7) | 79 (22.6) | 43 (28.9) |
Note: for continuous variable, mean (SD) is given; for categorical variables, N (%) is given