Table 3.
Patient and procedure details
| Anaemia (n = 6324) | Infection (n = 12,930) | Total (n = 19,254) | |
|---|---|---|---|
| Age, years | |||
| Mean (SD) | 69.7 (9.9) | 68.9 (10.8) | 69.2 (10.5) |
| Sex, n(%) | |||
| Male | 2604 (41.2) | 5297 (41.0) | 7901 (41.0) |
| Female | 3720 (58.8) | 7633 (59.0) | 11,353 (59.0) |
| Procedure type, n(%) | |||
| Hip | 3181 (50.3) | 6238 (48.2) | 9419 (48.9) |
| Knee | 3143 (49.7) | 6692 (51.8) | 9835 (51.1) |
| Comorbidities | n= 6138 | n= 12295 | n= 18433 |
| Hypertension | 3213 (52.3) | 6080 (49.5) | 9293 (50.4) |
| Non-insulin-dependent diabetes mellitus | 780 (12.7) | 1638 (13.3) | 2418 (13.1) |
| Chronic ischaemic heart disease | 595 (9.7) | 1139 (9.3) | 1734 (9.4) |
| Hypothyroidism | 596 (9.7) | 1105 (9.0) | 1701 (9.2) |
| Atrial fibrillation | 517 (8.4) | 866 (7.0) | 1383 (7.5) |
| History of circulatory disease | 434 (7.1) | 938 (7.6) | 1372 (7.4) |
| COPD | 397 (6.5) | 694 (5.6) | 1091 (5.9) |
| Rheumatoid arthritis | 197 (3.2) | 435 (3.5) | 632 (3.4) |
| Alzheimer’s disease | 17 (0.3) | 43 (0.3) | 60 (0.3) |
| Hyperthyroidism | 23 (0.4) | 34 (0.3) | 57 (0.3) |
| Insulin-dependent diabetes mellitus | 12 (0.2) | 35 (0.3) | 47 (0.3) |
| Dementia | 16 (0.3) | 21 (0.2) | 37 (0.2) |
| Obesity | 1479 (24.1) | 2292 (23.1) | 3771 (23.5) |
| Hypercholesterolemia | 609 (9.9) | 1062 (10.7) | 1671 (10.4) |
| Smoking | 327 (5.3) | 632 (6.4) | 959 (6.0) |
| Low sodium | 106 (1.7) | 193 (1.9) | 299 (1.9) |
| Psoriatic arthritis | 18 (0.3) | 52 (0.5) | 70 (0.4) |