Table 1.
Demographics and descriptive statistics
| All procedures | Serious complications* | ||
|---|---|---|---|
| Overall | 699 965 (100%) | 2218 (0·32%, 0·30–0·33) | |
| Sex | |||
| Male | 453 726 (64·82%) | 1545 (0·34%, 0·32–0·36) | |
| Female | 246 239 (35·18%) | 673 (0·27%, 0·25–0·29) | |
| Age group, years | |||
| <20 | 21 798 (3·11%) | 32 (0·15%, 0·10–0·21) | |
| 20–39 | 172 636 (24·66%) | 356 (0·21%, 0·19–0·23) | |
| 40–59 | 330 752 (47·25%) | 988 (0·30%, 0·28–0·32) | |
| 60–79 | 167 287 (23·90%) | 766 (0·46%, 0·43–0·49) | |
| ≥80 | 7492 (1·07%) | 76 (1·01%, 0·80–1·27) | |
| Modified Charlson comorbidity index | |||
| 0 | 590 110 (84·31%) | 1660 (0·28%, 0·26–0·30) | |
| 1–15 | 105 689 (15·10%) | 497 (0·47%, 0·43–0·51) | |
| 16–30 | 3881 (0·55%) | 52 (1·34%, 1·00–1·75) | |
| 31–50 | 285 (0·04%) | 9 (3·16%, 1·45–5·91) | |
| Index of multiple deprivation | |||
| Quintile 1 | 168 715 (24·10%) | 489 (0·29%, 0·26–0·32) | |
| Quintile 2 | 156 657 (22·38%) | 493 (0·31%, 0·29–0·34) | |
| Quintile 3 | 145 000 (20·72%) | 497 (0·34%, 0·31–0·37) | |
| Quintile 4 | 123 913 (17·70%) | 403 (0·33%, 0·29–0·36) | |
| Quintile 5 | 100 320 (14·33%) | 326 (0·32%, 0·29–0·36) | |
| Missing | 5360 (0·77%) | .. | |
| Rurality | |||
| Urban | 547 459 (78·21%) | 1712 (0·31%, 0·30–0·33) | |
| Rural | 149 882 (21·41%) | 504 (0·34%, 0·31–0·37) | |
| Missing | 2624 (0·37%) | .. | |
| Ethnic origin | |||
| White | 564 320 (80·62%) | 1911 (0·34%, 0·32–0·35) | |
| Asian | 18 555 (2·65%) | 51 (0·27%, 0·20–0·36) | |
| Black | 11 222 (1·60%) | 41 (0·37%, 0·26–0·50) | |
| Mixed race | 3870 (0·55%) | 13 (0·34%, 0·18–0·57) | |
| Other | 6547 (0·94%) | 14 (0·21%, 0·12–0·36) | |
| Missing | 95 451 (13·64%) | .. | |
Data are n (%) or n (%, 95% CI)
*
At least one serious complication within 90 days, defined as either pulmonary embolism, myocardial infarction, stroke, infection requiring surgery, fasciotomy, neurovascular injury, or death.