Table 1 Characteristics of patients
| Â | Primary THA | |
|---|---|---|
| Â | 2-year (n = 5,707) | 5-year (n = 3,289) |
Mean Age (± SD) | 65.0 ± 13.3 | 64.7 ± 12.9 |
Men/Women (%) | 49%/51% | 47%/53% |
Age groups n (%) | Â | Â |
   ≤ 60 yrs | 30% | 30% |
   >60-70 yrs | 31% | 32% |
   >70-80 yrs | 30% | 31% |
   >80 yrs | 9% | 6% |
Body Mass index (in kg/m2) | Â | Â |
   ≤ 24.9 | 24% | 24% |
   25-29.9 | 39% | 40% |
   30-34.9 | 24% | 23% |
   35-39.9 | 8% | 8% |
   ≥ 40 | 4% | 4% |
   Missing | 1% | 1% |
ASA Score | Â | Â |
   Class I-II | 62% | 64% |
   Class III-IV | 38% | 36% |
   Missing | 1% | 1% |
Cemented | Â | Â |
   Yes | 11% | 14% |
   Hybrid | 54% | 59% |
   Uncemented | 35% | 27% |
Underlying Diagnoses | Â | Â |
   Rheumatoid Arthritis/Other Inflammatory arthritis conditions | 3% | 3% |
   Osteoarthritis | 87% | 85% |
   Avascular Necrosis | 7% | 8% |
   Othera | 4% | 4% |