From: Incidence of hip replacement among national health insurance enrollees in Taiwan
 | Diagnosis | Percentage (%) | Men (%) | Mean age (range) (yrs) |
---|---|---|---|---|
Taiwan (1996–2004) | FNF | 1.5 | 48 | 70 |
 | AVN | 46.9 | 79 | 50 |
 | OA | 41.6 | 43 | 60 |
Norwegian (1987–1999) | FNF | 13 | 21 | 73 |
 | AVN | 0.8 | 51 | 57 |
 | OA | 69 | 32 | 70 |
Swedish (1992–2002) | FNF | 11.4 | - | 76 |
 | AVN | 2.9 | - | 70 |
 | OA | 74 | - | 69 |