Table 1.
Patient Demographics and Characteristics Before and After Propensity Score Matching
| Demographic or Characteristic, n (%) | Before Matching | After Matching | ||||
| Hip or Knee OA (n = 2483) | No Hip or Knee OA (n = 14,806) | P-Value | Hip or Knee OA (n = 2289) | No Hip or Knee OA (n = 2289) | P-Value | |
| Age (yr – avg. ± SD)a | 64.8 ± 10.8 | 55.9 ± 15.3 | <0.01 | 64.5 ± 10.8 | 64.4 ± 10.9 | 0.91 |
| White race | 1962 (82.6) | 11406 (82.7) | 0.92 | 1889 (82.5) | 1885 (82.4) | 0.88 |
| Female | 1440 (60.6) | 7579 (54.9) | <0.01 | 1378 (60.2) | 1392 (60.8) | 0.67 |
| Overweight or obese | 951 (40.0) | 1816 (13.2) | <0.01 | 867 (37.9) | 894 (39.1) | 0.41 |
| Anxiety disorder | 607 (25.5) | 1659 (12.0) | <0.01 | 548 (23.9) | 542 (23.7) | 0.84 |
| Major depressive disorder | 166 (7.0) | 334 (2.4) | <0.01 | 133 (5.8) | 104 (4.5) | 0.05 |
P values < 0.05 are in bold.
a
Denotes two-sided independent samples Student t-test.