Table 1 Sex and age group of patients who underwent surgery for ONHH or ONFH between 2008 and 2018
| Â | ONHH | ONFH | P value |
|---|---|---|---|
Total | 1,028 (100%) | 64,261 (100%) | Â |
Sex | Â | Â | Â |
Male | 393 (28.2%) | 44,206 (68.8%) | < 0.001* |
Female | 635 (61.8%) | 20,055 (31.2%) | |
Age group | Â | Â | Â |
Young | 57 (5.6%) | 8,633 (13.4%) | < 0.001* |
20–29 | 12 (1.2%) | 1,884 (2.9%) | |
30–39 | 45 (4.4%) | 6,749 (10.5%) | |
Middle-aged | 314 (30.7%) | 31,413 (48.9%) | |
40–49 | 119 (11.6%) | 12,978 (20.2%) | |
50–59 | 195 (19.0%) | 18,435 (28.7%) | |
Older adult | 657 (63.9%) | 24,215 (37.7%) | |
60–69 | 287 (27.9%) | 13,808 (21.5%) | |
70–79 | 315 (30.6%) | 8,712 (13.6%) | |
≥ 80 | 55 (5.4%) | 1,695 (2.6%) |