Table 1 Description of elderly patients undergoing hip hemiarthroplasty
| Â | Total | Uncemented | Cemented | P-value | |||
|---|---|---|---|---|---|---|---|
|  | (n = 25,862) | (n = 13,498) | (n = 12,364) |  | |||
| Â | N | % | N | % | N | % | Â |
Enrolee characteristics | |||||||
 Sex |  |  |  |  |  |  | < 0.001 |
  Male | 9,123 | 35.3 | 4,978 | 54.6 | 4,145 | 45.4 |  |
  Female | 16,739 | 64.7 | 8,520 | 50.9 | 8,219 | 49.1 |  |
 Age group |  |  |  |  |  |  | < 0.001 |
  80–84 years | 12,284 | 47.5 | 6,728 | 54.8 | 5,556 | 45.2 |  |
  85–89 years | 8,950 | 34.6 | 4,557 | 50.9 | 4,393 | 49.1 |  |
   ≥ 90 years | 4,628 | 17.9 | 2,213 | 47.8 | 2,415 | 52.2 |  |
 Insurance status |  |  |  |  |  |  | < 0.001 |
   ≥ US $840 | 14,509 | 56.1 | 7,903 | 54.5 | 6,606 | 45.5 |  |
   < US $840 | 11,353 | 43.9 | 5,595 | 49.3 | 5,758 | 50.7 |  |
Comorbidity | |||||||
 CCI score |  |  |  |  |  |  | 0.143 |
  CCI = 0 | 5,557 | 21.5 | 2,852 | 51.3 | 2,705 | 48.7 |  |
  CCI ≥ 1 | 20,305 | 78.5 | 10,646 | 52.4 | 9,659 | 47.6 |  |
Type of head |  |  |  |  |  |  | < 0.001 |
 Unipolar HA | 11,265 | 43.6 | 3,627 | 32.2 | 7,638 | 67.8 |  |
 Bipolar HA | 14,597 | 56.4 | 9,871 | 67.6 | 4,726 | 32.4 |  |
Provider characteristics | |||||||
 Hospital type |  |  |  |  |  |  | < 0.001 |
  Public | 9,226 | 35.7 | 4,531 | 49.1 | 4,695 | 50.9 |  |
  Private | 16,636 | 64.3 | 8,967 | 53.9 | 7,669 | 46.1 |  |
 Hospital level |  |  |  |  |  |  | < 0.001 |
  Medical centre | 7,679 | 29.7 | 3,370 | 43.9 | 4,309 | 56.1 |  |
  Non-medical centre | 18,183 | 70.3 | 10,128 | 55.7 | 8,055 | 44.3 |  |
 Hospital volume |  |  |  |  |  |  | < 0.001 |
  High (volume > 120) | 10,367 | 40.1 | 4,646 | 44.8 | 5,721 | 55.2 |  |
  Low (volume ≤ 120) | 15,495 | 59.9 | 8,852 | 57.1 | 6,643 | 42.9 |  |
 Surgeon volume |  |  |  |  |  |  | < 0.001 |
  High (volume > 21) | 9,258 | 35.8 | 4,173 | 45.1 | 5,085 | 54.9 |  |
  Low (volume ≤ 21) | 16,604 | 64.2 | 9,325 | 56.2 | 7,279 | 43.8 |  |