Table 2.
Patient characteristics
| Patient characteristic | Total | Preoperative | Postoperative |
|---|---|---|---|
| Number of patients | 25,163 | 9977 (40) | 15,186 (60) |
| Age - years | 68.9 (10.9) | 67.8 (11.7) | |
| Sex | |||
| Female | 16,409 (65) | 6398 (64) | 10,011 (66) |
| Male | 8754 (35) | 3579 (36) | 5175 (34) |
| Year of operation | |||
| 2008 | 6030 (24) | 3034 (30) | 2996 (20) |
| 2009 | 6306 (25) | 2531 (25) | 3775 (25) |
| 2010 | 6496 (26) | 2280 (23) | 4216 (28) |
| 2011 | 6331 (25) | 2132 (21) | 4199 (28) |
| ASA score | |||
| 1 | 5612 (22) | 2334 (23) | 3278 (22) |
| 2 | 14,464 (58) | 5387 (55) | 9077 (60) |
| 3 | 4678 (19) | 2086 (21) | 2592 (17) |
| 4 | 74 (0.3) | 41 (0.4) | 33 (0.2) |
| Unknown | 335 (1) | 129 (1) | 206 (1) |
| Operation time (minutes; SD) | 97.9 (31.2) | 87.4 (29.3) | |
| Days of thromboprophylaxis (mean, SD) | 23.7 (11.7) | 22.1 (11.5) | |
| Diagnosis (number and % in group) | |||
| Coxarthrosis | 20,095 | 8039 (81) | 12,056 (80) |
| Rheumatoid arthritis | 472 | 212 (2) | 260 (2) |
| Sequela fracture | 1385 | 661 (7) | 724 (5) |
| Sequela dysplasia | 2033 | 609 (6) | 1424 (9) |
| Sequela dysplasia (luxation) | 93 | 28 (0.3) | 65 (0.4) |
| Sequela Perthes | 29 | 9 (0.1) | 20 (0.1) |
| Sequela epiphysiolysis | 12 | 3 (0.0) | 9 (0.1) |
| Ankylosing spondylitis | 80 | 39 (0.4) | 41 (0.3) |
Number of patients (%) in group, mean and SD for continuous variables; ASA score = American Society of Anesthesiologists score.