Table 3. Multivariable Logistic Regression Models of Willingness to Undergo TJR, by 2 samples.
| Total Sample | sOA subsample | |||
|---|---|---|---|---|
| OR | 95% CI | OR | 95% CI | |
| Demographic Characteristics | ||||
| Older Age | 0.97 | 0.95-1.00 | N/A* | N/A |
| Women | 1.00 | 0.68-1.47 | N/A | N/A |
| African American | 0.47 | 0.31-0.72 | 0.42 | 0.25-0.69 |
| Education ≥ 12 years | 1.17 | 0.77-1.76 | 1.30 | 0.79-2.11 |
| Married or Living with Partner | 1.11 | 0.76-1.61 | 1.07 | 0.68-1.68 |
| Employed | 1.20 | 0.77-1.88 | N/A | N/A |
| Health Insurance | ||||
| No Health Insurance | 1.00 | 1.00 | ||
| Government Only | 1.43 | 0.63-3.23 | 1.07 | 0.42-2.70 |
| Non-Government Only | 0.91 | 0.39-2.10 | 0.88 | 0.32-2.45 |
| Government + Non-Government | 1.53 | 0.66-3.55 | 1.08 | 0.43-2.73 |
| Higher Community Poverty | 0.99 | 0.97-1.01 | 0.99 | 0.97-1.02 |
| Health Related Characteristics | ||||
| Excellent, Very Good, Good Self-Rated Health | 1.03 | 0.70-1.52 | 0.90 | 0.57-1.44 |
| Higher BMI | 0.99 | 0.97-1.01 | N/A | N/A |
| Higher CES-D | 1.00 | 0.97-1.02 | N/A | N/A |
| OA Related Characteristics | ||||
| Higher WOMAC Pain Score of Worst Knee or Hip | 1.04 | 0.97-1.11 | 1.03 | 0.95-1.12 |
| Higher WOMAC Function Score of Worst Knee or Hip | 0.99 | 0.97-1.01 | 0.97 | 0.95-1.00 |
| Longer Duration of Arthritis Symptoms | 0.99 | 0.68-1.01 | N/A | N/A |
| Greater Number of Knee / Hip Joints with KL ≥ 2 OA | 1.02 | 0.84-1.24 | N/A | N/A |
| Higher KL Grade of Worst Knee or Hip Joint | 0.92 | 0.75-1.13 | N/A | N/A |
| TJR Perceptions | ||||
| Heard of TJR | 1.27 | 0.57-2.85 | N/A | N/A |
| Family Member had TJR | 1.60 | 1.06-2.42 | N/A | N/A |
| Have a Good Understanding of TJR | 1.27 | 0.84-1.94 | 0.99 | 0.58-1.67 |
| Hospital Time | ||||
| 1-7 Days | 1.00 | 0.70-1.54 | 1.00 | |
| 1 week + | 1.04 | 0.55-1.99 | 0.95 | 0.58-1.55 |
| Don't Know | 1.04 | 1.03 | 0.48-2.22 | |
| Recovery Time | ||||
| < 2 months | 0.76 | 0.41-1.24 | 0.63 | 0.32-1.26 |
| 2-6 months | 1.00 | 1.00 | ||
| 6 + months | 0.75 | 0.49-1.17 | 0.78 | 0.45-1.35 |
| Don't Know | 0.95 | 0.51-1.79 | 0.97 | 0.45-2.08 |
| Pain Still after TJR | ||||
| None or Mild | 1.00 | 1.00 | ||
| Moderate to Extreme | 0.87 | 0.53-1.43 | 0.76 | 0.41-1.40 |
| Don't Know | 1.30 | 0.64-2.67 | 0.88 | 0.36-2.16 |
| Difficulty Walking Still after TJR | ||||
| None or Mild | 1.00 | 1.00 | ||
| Moderate to Extreme | 0.77 | 0.46-1.28 | 0.93 | 0.49-1.76 |
| Don't Know | 0.58 | 0.28-1.21 | 0.57 | 0.22-1.49 |
*
Not included in multivariable models because of lack of bivariate association p<0.1 with Willingness in this subsample.