Patient characteristics at first CRC diagnosis
| Patient characteristics | Colon cancer, n=4244 | Rectal cancer, n=1255 | Total, n=5499 |
| Gender, n (%) | |||
| Male | 2116 (49.9) | 723 (57.6) | 2839 (51.6) |
| Female | 2128 (50.1) | 532 (42.4) | 2660 (48.4) |
| Age at diagnosis (years), n (%) | |||
| <50 | 234 (5.5) | 96 (7.6) | 330 (6.0) |
| 50–59 | 568 (13.4) | 221 (17.6) | 789 (14.3) |
| 60–69 | 948 (22.3) | 346 (27.6) | 1294 (23.5) |
| 70–79 | 1275 (30.0) | 336 (26.8) | 1611 (29.3) |
| ≥80 | 1219 (28.7) | 256 (20.4) | 1475 (26.8) |
| Nationality, n (%) | |||
| Swiss | 3241 (76.4) | 909 (72.4) | 4150 (75.5) |
| Other | 1003 (23.6) | 346 (27.6) | 1349 (24.5) |
| Marital status, n (%) | |||
| Married/partnership | 2289 (53.9) | 724 (57.7) | 3013 (54.8) |
| Single/widowed/divorced | 1955 (46.1) | 531 (42.3) | 2486 (45.2) |
| Socioeconomic status, n (%) | |||
| High | 670 (15.8) | 185 (14.7) | 855 (15.5) |
| Medium | 1679 (39.6) | 515 (41.0) | 2194 (39.9) |
| Low | 1056 (24.9) | 369 (29.4) | 1425 (25.9) |
| Unclassifiable/missing | 839 (19.8) | 186 (14.8) | 1025 (18.6) |
| Period of diagnosis, n (%) | |||
| 1985–1989 | 666 (15.7) | 180 (14.3) | 846 (15.4) |
| 1990–1994 | 678 (16.0) | 216 (17.2) | 894 (16.3) |
| 1995–1999 | 722 (17.0) | 221 (17.6) | 943 (17.1) |
| 2000–2004 | 735 (17.3) | 207 (16.5) | 942 (17.1) |
| 2005–2009 | 803 (18.9) | 235 (18.7) | 1038 (18.9) |
| 2010–2013 | 640 (15.1) | 196 (15.6) | 836 (15.2) |
| Charlson Comorbidity Index, n (%) | |||
| 0 | 1356 (32.0) | 538 (42.9) | 1894 (34.4) |
| 1–2 | 982 (23.1) | 279 (22.2) | 1261 (22.9) |
| 3–4 | 237 (5.6) | 66 (5.3) | 303 (5.5) |
| ≥5 | 474 (11.2) | 106 (8.4) | 580 (10.5) |
| Missing | 1195 (28.2) | 266 (21.2) | 1461 (26.6) |
| Familial history of CRC, n (%) | |||
| No | 1195 (28.2) | 521 (41.5) | 1716 (31.2) |
| Yes | 249 (5.9) | 115 (9.2) | 364 (6.6) |
| Missing | 2800 (66.0) | 619 (49.3) | 3419 (62.2) |
| At least one genetic counselling uptake, n (%) | |||
| No | 4160 (98.0) | 1228 (97.8) | 5388 (98.0) |
| Yes | 84 (2.0) | 27 (2.2) | 111 (2.0) |
| History of CRC in FDRs, n (%) | |||
| No | 1195 (28.2) | 521 (41.5) | 1716 (31.2) |
| Yes | 249 (5.9) | 115 (9.2) | 364 (6.6) |
| Missing | 2800 (66.0) | 619 (49.3) | 3419 (62.2) |
| Colon cancer location | |||
| Right colon | 1731 (40.8) | ||
| Left colon | 1964 (46.3) | ||
| Not specified/overlap | 549 (12.9) |
CRC, colorectal cancer; FDRs, first-degree relatives.