Table 1 Joint replacement demographics and estimated costs in 2003 and 2013
| Â | Total knee replacement | Total hip replacement | ||
|---|---|---|---|---|
2003 | 2013 | 2003 | 2013 | |
Procedures | ||||
 Total, n | 20,986 | 42,920 | 15,031 | 25,945 |
 Females, n (%) | 12,004 (57.2) | 24,305 (56.6) | 8192 (54.5) | 13,830 (53.3) |
 Aged ≥70 years, n (%) | 11,206 (53.4) | 19,115 (44.5) | 7701 (51.2) | 11,655 (44.9) |
 Private hospital, n (%) | 13,650 (65.0) | 29,783 (69.4) | 9581 (64.1) | 18,163 (70.0) |
 Metropolitan hospital, n (%) | 13,687 (65.2) | 27,557 (64.6) | 10,107 (67.2) | 17,556 (67.7) |
  > 1 procedure in same yeara, n (%) | 2824 (13.5) | 6978 (16.3) | 860 (5.7) | 1688 (6.5) |
Estimated costsb | ||||
 Overall health system | $448 million | $905 million | $364 million | $625 million |
 Private health system only | $272 million | $591 million | $227 million | $429 million |
 Public health system only | $176 million | $314 million | $137 million | $196 million |