| | Characteristic | Premenopausal age (≤45 yrs) | | | Menopausal age (46–54 yrs) | | | Postmenopausal age (≥55 yrs) | | | | Male (%) | Female (%) | value | Male (%) | Female (%) | value | Male (%) | Female (%) | value |
| | Tumour location | | | <0.001 | | | <0.001 | | | <0.001 | | Colon | 19,00 (70.4) | 1,861 (75.5) | | 4,446 (71.4) | 3,802 (76.5) | | 22,361 (78.4) | 22,870 (84.9) | | | Rectum | 799 (29.6) | 604 (24.5) | | 1,783 (28.6) | 1,171 (23.5) | | 6,159 (21.6) | 4,056 (15.1) | | | Grade | | | 0.01 | | | 0.6 | | | <0.001 | | Well differentiated | 180 (7.3) | 155 (6.8) | | 549 (9.9) | 475 (10.5) | | 2,518 (9.7) | 2,269 (9.1) | | | Moderately differentiated | 1,668 (68.1) | 1,664 (72.9) | | 4,113 (74.1) | 3,338 (73.5) | | 19,111 (73.6) | 17,393 (69.8) | | | Poorly differentiated or undifferentiated | 602 (24.6) | 463 (20.3) | | 892 (16.1) | 729 (16.1) | | 4,320 (16.6) | 5,271 (21.1) | | | TNM stage | | | 0.18 | | | 0.45 | | | 0.54 | | 0 | 77 (2.9) | 68 (2.8) | | 274 (4.4) | 209 (4.2) | | 1,018 (3.6) | 829 (3.1) | | | I | 400 (14.8) | 441 (17.9) | | 1,513 (24.3) | 1,189 (23.9) | | 7,373 (25.9) | 6.748 (25.1) | | | II | 606 (22.5) | 523 (21.2) | | 1,356 (21.8) | 1,064 (21.4) | | 8,015 (28.1) | 7.982 (29.6) | | | III | 1,009 (37.4) | 876 (35.5) | | 1,920 (30.8) | 1,581 (31.8) | | 7,773 (27.3) | 7,521 (27.9) | | | IV | 607 (22.5) | 557 (22.6) | | 1,166 (18.7) | 930 (18.7) | | 4,341 (15.2) | 3,846 (14.3) | | | Marital status | | | 0.001 | | | <0.001 | | | <0.001 | | Married | 1,453 (56.4) | 1,398 (59.8) | | 3,680 (63.3) | 2,786 (60.0) | | 17,792 (66.4) | 10,739 (42.6) | | | Widowed | 7 (0.3) | 19 (0.8) | | 50 (0.9) | 126 (2.7) | | 2,341 (8.7) | 8,320 (33.0) | | | Others | 1,115 (43.3) | 919 (39.3) | | 2,079 (35.8) | 1,730 (37.3) | | 6,657 (24.8) | 6,155 (24.4) | |
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