| Overall (N = 4572) | EOCRC, < 50 years (N = 991) | LOCRC, ≥ 50 years (N = 3581) | P value |
---|---|---|---|---|
Age at diagnosis, years | 58.64 (11.71) | 42.24 (6.85) | 63.18 (8.20) | < 0.001 |
Sex | Â | Â | Â | 0.001 |
Male | 2720 (59.5) | 544 (54.9) | 2176 (60.8) | Â |
Female | 1852 (40.5) | 447 (45.1) | 1405 (39.2) | Â |
Marital status | Â | Â | Â | 0.001 |
Married | 4318 (94.1) | 911 (91.9) | 3390 (94.7) | Â |
Not married/divorced/widowed | 270 (5.9) | 80 (8.1) | 190 (5.3) | Â |
Education level |  |  |  | < 0.001 |
Primary school or below | 1325 (29.0) | 161 (16.2) | 1164 (32.5) | Â |
Middle school | 1475 (32.3) | 343 (34.6) | 1132 (31.6) | Â |
High school/specialized secondary schools | 1037 (22.7) | 211 (21.3) | 826 (23.1) | Â |
University/specialty or above | 732 (16.0) | 276 (27.9) | 456 (12.7) | Â |
Region |  |  |  | < 0.001 |
Eastern | 1312 (28.7) | 233 (23.5) | 1079 (30.1) | Â |
Northern | 563 (12.3) | 112 (11.3) | 451 (12.6) | Â |
Southern | 665 (14.5) | 197 (19.9) | 468 (13.1) | Â |
Central | 689 (15.1) | 141 (14.2) | 548 (15.3) | Â |
Northeast | 364 (8.0) | 60 (6.1) | 304 (8.5) | Â |
Southwest | 652 (14.3) | 165 (16.6) | 487 (13.6) | Â |
Northwest | 327 (7.2) | 83 (8.4) | 244 (6.8) | Â |
Occupation |  |  |  | < 0.001 |
Government and public sector personnel | 653 (14.3) | 271 (27.3) | 382 (10.7) | Â |
Service workers, migrant workers, and individuals | 1726 (37.8) | 472 (47.6) | 1254 (35.0) | Â |
Unemployment, layoffs, etc. | 1929 (42.2) | 181 (18.3) | 1748 (48.8) | Â |
Unknow | 264 (5.8) | 67 (6.8) | 197 (5.5) | Â |
Location of cancer | Â | Â | Â | 0.107 |
Colon | 2054 (45.5) | 83 (53.5) | 1587 (44.8) | Â |
Rectum | 2463 (54.5) | 72 (46.5) | 1953 (55.2) | Â |
Pathological TNM stage at first diagnosis | Â | Â | Â | 0.032 |
I | 110 (2.5) | 19 (2.0) | 91 (2.7) | Â |
II | 772 (17.6) | 141 (14.7) | 631 (18.4) | Â |
III | 1964 (44.7) | 446 (46.6) | 1518 (44.2) | Â |
IV | 1545 (35.2) | 352 (36.7) | 1193 (34.8) | Â |
Metastasis at first diagnosis |  |  |  | < 0.001 |
No metastasis | 2842 (62.5) | 598 (60.9) | 2244 (63.0) | Â |
With liver metastasis only | 639 (14.1) | 126 (12.8) | 513 (14.4) | Â |
With lung metastasis only | 179 (3.9) | 34 (3.5) | 145 (4.1) | Â |
With both liver and lung metastases | 191 (4.2) | 31 (3.2) | 160 (4.5) | Â |
Widespread metastases throughout the body | 695 (15.3) | 193 (19.7) | 502 (14.1) | Â |
Reason for the first hospital visit | Â | Â | Â | 0.548 |
Observation of suspected symptoms by patients themselves | 4003 (88.1) | 882 (89.2) | 3121 (87.7) | Â |
Physical examination findings | 265 (5.8) | 51 (5.2) | 214 (6.0) | Â |
Detection of CRC during screening or treatment of other diseases | 278 (6.1) | 56 (5.7) | 222 (6.2) | Â |
Number of visited hospital | 1.94 (0.81) | 2.10 (0.83) | 1.89 (0.80) | < 0.001 |