| Gastric cancer (n = 6016) | Colorectal cancer (n = 7257) | Lung cancer (n = 4502) | ||||||
---|---|---|---|---|---|---|---|---|---|
 | No dementia | Mild dementia | Moderate-to-severe dementia | No dementia | Mild dementia | Moderate-to-severe dementia | No dementia | Mild dementia | Moderate-to-severe dementia |
Total | 5712 (100) | 224 (100) | 80 (100) | 6835 (100) | 324 (100) | 98 (100) | 4213 (100) | 216 (100) | 73 (100) |
Age, years | |||||||||
  65–69 | 1374 (24.1) | 7 (3.1) | 3 (3.8) | 1796 (26.3) | 11 (3.4) | 5 (5.1) | 1059 (25.1) | 16 (7.4) | 3 (4.1) |
  70–74 | 1602 (28.0) | 20 (8.9) | 6 (7.5) | 1921 (28.1) | 39 (12.0) | 6 (6.1) | 1317 (31.3) | 32 (14.8) | 6 (8.2) |
  75–79 | 1477 (25.9) | 58 (25.9) | 11 (13.8) | 1666 (24.4) | 70 (21.6) | 24 (24.5) | 1011 (24.0) | 52 (24.1) | 18 (24.7) |
  80–84 | 865 (15.1) | 77 (34.4) | 23 (28.7) | 984 (14.4) | 107 (33.0) | 28 (28.6) | 600 (14.2) | 62 (28.7) | 15 (20.5) |
  ≥ 85 | 394 (6.9) | 62 (27.7) | 37 (46.3) | 468 (6.8) | 97 (29.9) | 35 (35.7) | 226 (5.4) | 54 (25.0) | 31 (42.5) |
Sex | |||||||||
  Male | 4046 (70.8) | 135 (60.3) | 48 (60.0) | 4044 (59.2) | 175 (54.0) | 38 (38.8) | 2879 (68.3) | 147 (68.1) | 47 (64.4) |
Comorbidity | |||||||||
  No comorbidity | 4338 (75.9) | 147 (65.6) | 63 (78.8) | 5493 (80.4) | 238 (73.5) | 75 (76.5) | 2883 (68.4) | 139 (64.4) | 48 (65.8) |
  Moderate comorbidities | 1197 (21.0) | 68 (30.4) | 15 (18.8) | 1190 (17.4) | 69 (21.3) | 22 (22.4) | 1155 (27.4) | 66 (30.6) | 22 (30.1) |
  Severe comorbidities | 177 (3.1) | 9 (4.0) | 2 (2.5) | 152 (2.2) | 17 (5.2) | 1 (1.0) | 175 (4.2) | 11 (5.1) | 3 (4.1) |
Cancer stage | |||||||||
  0 | — | — | — | 1853 (27.1) | 55 (17.0) | 8 (8.2) | 8 (0.2) | 0 (0.0) | 0 (0.0) |
  I | 3608 (63.2) | 115 (51.3) | 33 (41.3) | 1431 (20.9) | 54 (16.7) | 10 (10.2) | 1397 (33.2) | 53 (24.5) | 7 (9.6) |
  II | 535 (9.4) | 32 (14.3) | 6 (7.5) | 1326 (19.4) | 75 (23.1) | 30 (30.6) | 392 (9.3) | 11 (5.1) | 3 (4.1) |
  III | 583 (10.2) | 30 (13.4) | 9 (11.3) | 1339 (19.6) | 71 (21.9) | 20 (20.4) | 791 (18.8) | 30 (13.9) | 13 (17.8) |
  IV | 908 (15.9) | 40 (17.9) | 21 (26.3) | 843 (12.3) | 57 (17.6) | 24 (24.5) | 1571 (37.3) | 111 (51.4) | 39 (53.4) |
  Unstaged | 78 (1.4) | 7 (3.1) | 11 (13.8) | 43 (0.6) | 12 (3.7) | 6 (6.1) | 54 (1.3) | 11 (5.1) | 11 (15.1) |
Small cell lung cancer | |||||||||
  Yes | — | — | — | — | — | — | 435 (10.3) | 21 (9.7) | 5 (6.8) |
Tumour resectiona | |||||||||
  Yes | 3868 (67.7) | 146 (65.2) | 26 (32.5) | 4908 (71.8) | 253 (78.1) | 65 (66.3) | 1354 (32.1) | 33 (15.3) | 5 (6.8) |
Pharmacotherapy | |||||||||
  Yes | 466 (8.2) | 13 (5.8) | 3 (3.8) | 136 (2.0) | 7 (2.2) | 1 (1.0) | 1091 (25.9) | 37 (17.1) | 9 (12.3) |
Radiotherapy | |||||||||
  Yes | 6 (0.1) | 0 (0.0) | 0 (0.0) | 12 (0.2) | 1 (0.3) | 1 (1.0) | 276 (6.6) | 29 (13.4) | 5 (6.8) |
All-cause mortality within 3 years of cancer diagnosis | |||||||||
  Deaths | 1773 (31.0) | 133 (59.4) | 67 (83.8) | 1412 (20.7) | 156 (48.1) | 74 (75.5) | 2371 (56.3) | 184 (85.2) | 71 (97.3) |
Median follow-up period, years (IQR) | 3.00 (1.99–3.00) | 1.96 (0.37–3.00) | 0.47 (0.16–1.94) | 3.00 (3.00–3.00) | 3.00 (0.89–3.00) | 1.19 (0.25–2.88) | 2.14 (0.69–3.00) | 0.58 (0.16–1.78) | 0.22 (0.08–0.58) |