Table 3.
Baseline willingness to undergo TKR and receipt of TKR surgery within two years, by race and by sex
| TKR Surgery Receipt, No. (%) | OR (95% CI) | Adjusted* OR (95% CI) | Adjusted† OR (95% CI) | Adjusted‡ OR (95% CI) | |
|---|---|---|---|---|---|
| All | |||||
| Unwilling (referent) | 10 (5.2) | 1.00 | 1.00 | 1.00 | 1.00 |
| Willing | 58 (11.1) | 2.30 (1.15, 4.59)§ | 1.82 (0.89, 3.69) | 1.94 (0.88, 4.28) | 2.04 (0.92, 4.53) |
| African-Americans‖ | |||||
| Unwilling (referent) | 4 (4.0) | 1.00 | 1.00 | 1.00 | 1.00 |
| Willing | 6 (3.9) | 0.98 (0.27, 3.90) | 0.98 (0.27, 3.93) | 1.72 (0.38, 11.98) | 1.70 (0.38, 11.83) |
| Whites‖ | |||||
| Unwilling (referent) | 6 (6.5) | 1.00 | 1.00 | 1.00 | 1.00 |
| Willing | 52 (14.1) | 2.39 (1.07, 6.37)§ | 2.32 (1.03, 6.22)§ | 2.01 (0.87, 5.49) | 2.15 (0.92, 5.93) |
| Men¶ | |||||
| Unwilling (referent) | 3 (5.3) | 1.00 | 1.00 | 1.00 | 1.00 |
| Willing | 26 (14.0) | 2.93 (0.98, 12.60) | 2.25 (0.74, 9.82) | 2.92 (0.90, 18.88) | 3.11 (0.84, 20.18) |
| Women¶ | |||||
| Unwilling (referent) | 7 (5.1) | 1.00 | 1.00 | 1.00 | 1.00 |
| Willing | 32 (9.5) | 1.95 (0.89, 4.91) | 1.63 (0.73, 4.15) | 1.61 (0.68, 4.47) | 1.68 (0.70, 4.69) |
*
Adjusted for age, sex, and race
†
Adjusted for age, sex, race, education level, income, insurance type, and MOS-Social Support
‡
Adjusted for age, sex, race, education level, income, insurance type, MOS-Social Support, and total WOMAC score
§
p<0.05
‖
Likelihood ratio test for interaction between willingness and race was statistically not significant in all models
¶
Likelihood ratio test for interaction between willingness and sex was statistically not significant in all models
MOS=Medical Outcomes Study; WOMAC=Western Ontario McMaster Instrument