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| Total (N=34311) | Osteoarthritis (N=33815) | Rheumatoid Arthritis (N=496) | P Value | |
|---|---|---|---|---|
|
| ||||
| N (%) | N (%) | N (%) | ||
| Total Operative year | 2319 (6.8) | 2277 (6.7) | 42 (8.5) | 0.127 |
| 2009 | 734 (7.1) | 687 (6.7) | 9 (5.8) | 0.640 |
| 2010 | 866 (7.4) | 777 (6.7) | 16 (8.9) | 0.249 |
| 2011 | 916 (7.5) | 813 (6.8) | 17 (10.6) | 0.055 |
