| Experimental N = 65 | Control N = 48 |  | ||
---|---|---|---|---|---|
 | M | (SD) | M | (SD) | p (1) |
Age | 77.0 | 10.4 | 78.7 | 10.2 | p = .81 |
Education | 9.4 | 4.1 | 9.2 | 4.2 | p = .89 |
Socioeconomic status | Â | Â | Â | Â | Â |
   High (%) | 87.7 | 72.9 | p = .20 | ||
   Low (%) | 12.3 | 27.1 | p = .12 | ||
Composite Psychological factor | -.02 | (.93) | -.04 | (1.01) | p = .76 |
   Optimism | 3.27 | (.84) | 3.39 | (.73) | p = .51 |
   Mastery | 2.92 | (.61) | 2.80 | (.73) | p = .44 |
   Self-efficacy | 56.67 | (14.79) | 53.17 | (14.38) | p = .61 |
Depression | 19.05 | (12.4) | 20.21 | (11.2) | p = .79 |
Type of arthritis, OA (%) | 58.5 | 66.7 | p = .57 | ||
Composite Physical factor | - .03 | (-.99) | -.15 | (1.02) | p = .16 |
   Pain intensity | 65.31 | (24.79) | 63.65 | (22.49) | p = .77 |
   Fatigue | 66.00 | (28.97) | 72.60 | (23.83) | p = .40 |
   Functional limitations | 3.43 | (1.37) | 3.31 | (1.29) | p = .58 |
   Stiffness | 3.11 | (.97) | 3.24 | (.90) | p = .37 |