Table 1 Study cohort characteristics by primary diagnosis at total hip arthroplasty surgery
Total | Osteoarthritis | Osteonecrosis | |||||
|---|---|---|---|---|---|---|---|
n | % | n | % | n | % | ||
Total N | 47,523 | 100.0 | 45,252 | 95.2 | 2,271 | 4.8 | |
Age, years | Median (IQR) | 66.0 (58.0–74.0) | 67.0 (59.0–75.0) | 55.0 (46.0–64.0) | |||
Age category, years | <65 | 20,899 | 44.0 | 19,195 | 42.4 | 1,704 | 75.0 |
≥65 | 26,624 | 56.0 | 26,057 | 57.6 | 567 | 25.0 | |
Gender | Male | 20,181 | 42.5 | 18,875 | 41.7 | 1,306 | 57.5 |
Female | 27,341 | 57.5 | 26,376 | 58.3 | 965 | 42.5 | |
Race | White | 36,367 | 76.5 | 35,009 | 77.4 | 1,358 | 59.8 |
Black | 3,637 | 7.7 | 3,324 | 7.4 | 313 | 13.8 | |
Hispanic | 3,283 | 6.9 | 3,030 | 6.7 | 253 | 11.1 | |
Asian | 1,606 | 3.4 | 1,436 | 3.2 | 170 | 7.5 | |
Other/Multi-racial | 753 | 1.6 | 707 | 1.6 | 46 | 2.0 | |
Unknown | 1,877 | 4.0 | 1,746 | 3.9 | 131 | 5.8 | |
BMI categorya, kg/m2 | <30 | 27,863 | 58.6 | 26,358 | 58.3 | 1,505 | 66.3 |
≥30 and <35 | 11,625 | 24.5 | 11,170 | 24.7 | 455 | 20.0 | |
≥35 | 7,394 | 15.6 | 7,138 | 15.8 | 256 | 11.3 | |
ASA categorya | 1 and 2 | 29,312 | 61.7 | 28,008 | 61.9 | 1,304 | 57.4 |
≥3 | 16,724 | 35.2 | 15,827 | 35.0 | 897 | 39.5 | |
Diabetes | 10,493 | 22.1 | 10,042 | 22.2 | 451 | 19.9 | |