Table 1.
Demographic characteristics and comorbidities of patients who underwent colectomy in Taiwan from 2000–2012.
| Variable | Total | Non-Colectomy | Colectomy | p-Value |
|---|---|---|---|---|
| n = 3210 | n = 2568 | n = 642 | ||
| n | n (%)/Mean ± SD | n (%)/Mean ± SD | ||
| Age at baseline (years) | 0.99 | |||
| <40 | 580 | 463 (18.0) | 117 (18.2) | |
| 40–64 | 1303 | 1044 (40.7) | 259 (40.3) | |
| ≥65 | 1327 | 1061 (41.3) | 266 (41.4) | |
| Mean age | 58.4 (18.1) | 58.3 (18.0) | 0.92 | |
| Sex | 0.42 | |||
| Female | 1219 | 984 (38.3) | 235 (36.6) | |
| Male | 1991 | 1584 (61.7) | 407 (63.4) | |
| Baseline comorbidity | ||||
| Hypertension | 1362 | 1095 (42.6) | 267 (41.6) | 0.63 |
| Hyperlipidemia | 574 | 459 (17.9) | 115 (17.9) | 0.98 |
| Cerebrovascular disease 430–438 | 1253 | 1010 (39.3) | 243 (37.9) | 0.49 |
| Heart disease | 612 | 499 (19.4) | 113 (17.6) | 0.29 |
| Thyroid disease | 168 | 135 (5.3) | 33 (5.1) | 0.91 |
| COPD | 761 | 617 (24.0) | 144 (22.4) | 0.39 |
| Renal disease | 284 | 220 (8.6) | 64 (10.0) | 0.26 |
| Liver disease | 786 | 635 (24.7) | 151 (23.5) | 0.52 |
| Anemia | 462 | 365 (14.2) | 97 (15.1) | 0.56 |
| Immune disorder | 21 | 17 (0.7) | 4 (0.6) | 0.91 |
| Follow-up time (years) | 5.6 (3.6) | 4.9 (4.0) |
SD: standard deviation; COPD: chronic obstructive pulmonary disease.