Table 1.
Characteristics of all patients admitted with colon cancer during the 1980–2016 study period
| Characteristic | Total, n = 1530 |
Age group (years) | P value | |||||
|---|---|---|---|---|---|---|---|---|
| < 65, n = 353 |
65–74, n = 451 |
75–79, n = 281 |
80–84, n = 269 |
85–89, n = 124 |
≥ 90, n = 52 |
|||
| Sex | 0.031a | |||||||
| Females | 780 (51) | 181 (23) | 210 (27) | 139 (18) | 148 (19) | 70 (9) | 32 (4) | |
| Males | 750 (49) | 172 (23) | 241 (32) | 142 (19) | 121 (16) | 54 (7) | 20 (3) | |
| Calendar year | < 0.001b | |||||||
| 1980–1989 | 274 (18) | 70 (26) | 89 (33) | 45 (16) | 49 (18) | 18 (7) | 3 (1) | |
| 1990–1999 | 367 (24) | 85 (23) | 115 (31) | 73 (20) | 56 (15) | 29 (8) | 9 (3) | |
| 2000–2009 | 487 (32) | 129 (27) | 121 (25) | 85 (18) | 100 (21) | 33 (7) | 19 (4) | |
| 2010–2016 | 402 (26) | 69 (17) | 126 (31) | 78 (19) | 65 (16) | 44 (11) | 21 (5) | |
| Charlson Comorbidity Index | < 0.001b | |||||||
| 0 | 1076 (70) | 300 (85) | 321 (71) | 187 (66) | 165 (61) | 75 (61) | 28 (54) | |
| 1–2 | 358 (23) | 51 (14) | 100 (22) | 72 (26) | 81 (30) | 39 (32) | 15 (29) | |
| > 2 | 96 (6) | 2 (1) | 30 (7) | 22 (8) | 23 (9) | 10 (8) | 9 (17) | |
| ASA score | < 0.001b | |||||||
| 1–2 | 832 (54) | 282 (80) | 284 (63) | 134 (48) | 94 (35) | 28 (23) | 10 (19) | |
| 3 | 598 (39) | 66 (19) | 147 (33) | 131 (47) | 150 (56) | 76 (61) | 28 (54) | |
| 4–5 | 100 (7 | 5 (1) | 20 (4) | 16 (6) | 25 (9) | 20 (16) | 14 (27) | |
| Localization | < 0.001a | |||||||
| Right colon | 845 (55) | 166 (47) | 232 (51) | 174 (62) | 158 (59) | 79 (64) | 36 (69) | |
| Left colon | 685 (45) | 187 (53) | 219 (49) | 107 (38) | 111 (41) | 45 (36) | 16 (31) | |
| Stage (TNM) | 0.14d | |||||||
| I | 189 (12) | 42 (12) | 61 (14) | 34 (12) | 34 (13) | 15 (12) | 3 (6) | |
| II | 582 (38) | 127 (36) | 160 (36) | 117 (42) | 101 (38) | 47 (38) | 30 (58) | |
| III | 331 (22) | 78 (22) | 120 (27) | 62 (22) | 54 (20) | 12 (11) | 5 (10) | |
| IV | 377 (25) | 102 (29) | 102 (23) | 60 (21) | 66 (25) | 35 (27) | 12 (23) | |
| Unknown | 51 (3) | 4 (1) | 8 (2) | 8 (3) | 14 (5) | 15 (12) | 2 (4) | |
| Treatment intent categories | < 0.001c | |||||||
| Curative intent | ||||||||
| Major resectionf | 1034 (68) | 239 (68) | 328 (73) | 204 (73) | 172 (64) | 67 (54) | 24 (46) | |
| Polypectomy | 38 (3) | 10 (3) | 11 (2) | 11 (4) | 6 (2) | 0 | 0 | |
| Non-curative intent | ||||||||
| Major resection | 220 (19) | 62 (18) | 64 (14) | 39 (14) | 38 (14) | 14 (11) | 3 (6) | |
| Bypass/stoma | 67 (4) | 17 (5) | 17 (4) | 6 (2) | 14 (5) | 11 (9) | 2 (4) | |
| Best supportive care | 171 (11) | 25 (7) | 31 (7) | 21 (8) | 39 (15) | 32 (26) | 23 (44) | |
| Surgery | 0.005b | |||||||
| Elective surgerye | 1081 (82) | 263 (83) | 339 (83) | 217 (88) | 176 (79) | 72 (78) | 14 (48) | |
| Emergency surgery | 240 (18) | 55 (17) | 70 (17) | 32 (12) | 48 (21) | 20 (22) | 15 (52) | |
Values are the number of patients (%), unless otherwise indicated. aCochran-Armitage exact trend test; bOrdinal logistic regression with age group as covariate; cMultinomial logistic regression with age group as covariate
dOrdinal logistic regression with age group as covariate, for known stages; eIncluding polypectomy; fIncluding R0 resection, R0 resection with perforation and R1 resection