Table 1 Demographics
| Â | Â | Women | Men | P value |
|---|---|---|---|---|
Sample (n = 208) | 66.3% (n = 138) | 33.7% (n = 70) | Â | |
Age | 61.92 (10.03) | 61.66 (9.92) | 0.86 | |
Race | White | 93.48% | 92.86% | 0.23 |
| Â | Black | 4.35% | 2.86% | Â |
| Â | Other | 2.17% | 1.43% | Â |
Marital status | Married | 55.80% | 60% | 0.54 |
| Â | Single | 35.51% | 31.43% | Â |
Education | High school | 30.43% | 28.57% | 0.80 |
| Â | College | 60.14% | 61.43% | Â |
Income | US$0 to US$19,999 | 28.26% | 14.29% | 0.05 |
| Â | US$20,000 to US$39,999 | 17.39% | 21.43% | Â |
| Â | US$40,000 to US$59,999 | 13.77% | 11.43% | Â |
| Â | US$60,000+ | 23.19% | 37.14% | Â |
Duration of knee pain (months) | 0 to 35 months | 23.19% | 25.71% | 0.86 |
| Â | 36 to 59 months | 19.57% | 21.43% | Â |
| Â | > 60 months | 56.52% | 52.86% | Â |
OA grade | 3 | 32.61% | 18.57% | 0.03* |
| Â | 4 | 60.14% | 74.29% | Â |
Contralateral knee pain | 78.26% | 72.86% | 0.39 | |
Contralateral knee OA | 14.49% | 15.71% | 0.84 | |
BMI | 35.43 (7.59) | 33.19 (6.59) | 0.04* | |
Pain at rest (0 to 20) | 3.77 (4.36) | 2.67 (3.81) | 0.08 | |
Non-opiate medication (acetaminophen equivalent) | 980.84 (1,107.9) | 681.79 (1,048.53) | 0.06 | |
Opiate medication (morphine equivalent) | 6.76 (15.71) | 3.86 (12.19) | 0.14 | |