RA responders versus nonresponders.
| Responders, n = 134 | Nonresponders, n = 59 | p | |
|---|---|---|---|
| Age, yrs, mean (SD) | 62.9 (13.5) | 64.3 (13.8) | 0.52 |
| BMI, kg/m2, mean (SD) | 27.5 (6.4) | 28.4 (7.0) | 0.42 |
| Length of stay, days, mean (SD) | 4.9 (1.7) | 5.7 (2.7) | 0.01 |
| Female, n (%) | 100 (76) | 47 (80) | 0.55 |
| ASA class 1 and class 2, n (%) | 91 (67) | 33 (56) | 0.20 |
| White, n (%) | 106 (79) | 41 (69) | 0.44 |
| Baseline WOMAC pain | 44.7 (20.4) | 55.0 (63.6) | 0.49 |
| Baseline WOMAC function | 38.4 (19.4) | 55.9 (62.4) | 0.23 |
BMI: body mass index; ASA: American Society of Anesthesia; WOMAC: Western Ontario and McMaster Universities Osteoarthritis Index.