Table 2.
Logistic regression analyses of willingness to undergo arthroplasty and the individual social support measures, stratified by race.
| Willing | Unwilling | Unadjusted | Adjusted d | |||
|---|---|---|---|---|---|---|
| OR (95% CI) b | p- valuec | OR (95% CI) b | p- value c | |||
| All Patients | 585 | 208 | ||||
| Married, n | 279 | 59 | 2.30 (1.63, 3.24) | <0.001 | 1.72 (1.14, 2.60) | 0.010 |
| # Close Friends or Family a | 1.07 (0.94, 1.22) | 0.338 | 1.05 (0.91, 1.21) | 0.489 | ||
| Quartile 1 | 140 | 55 | ||||
| Quartile 2 | 146 | 52 | ||||
| Quartile 3 | 83 | 33 | ||||
| Quartile 4 | 216 | 68 | ||||
| MOS Social Support, mean (SD) | 15.0 (4.8) | 13.5 (5.5) | 1.06 (1.03, 1.09) | <0.001 | 1.03 (1.00, 1.07) | 0.079 |
| White Patients | 409 | 102 | ||||
| Married | 237 | 37 | 2.42 (1.54, 3.79) | <0.001 | 1.87 (1.11, 3.15) | 0.029 |
| # Close Friends or Family a | 1.01 (0.84, 1.20) | 0.952 | 1.03 (0.84, 1.26) | 0.801 | ||
| Quartile 1 | 93 | 22 | ||||
| Quartile 2 | 90 | 24 | ||||
| Quartile 3 | 63 | 17 | ||||
| Quartile 4 | 163 | 39 | ||||
| MOS Social Support | 15.5 (4.5) | 13.7 (5.5) | 1.08 (1.03, 1.13) | 0.001 | 1.06 (1.00, 1.12) | 0.036 |
| African-American Patients (n=282) | 176 | 106 | ||||
| Married | 42 | 22 | 1.20 (0.67, 2.15) | 0.544 | 1.15 (0.61, 2.17) | 0.671 |
| # Close Friends or Family a | 1.05 (0.85, 1.28) | 0.669 | 1.02 (0.82, 1.27) | 0.843 | ||
| Quartile 1 | 47 | 33 | ||||
| Quartile 2 | 56 | 28 | ||||
| Quartile 3 | 20 | 16 | ||||
| Quartile 4 | 53 | 29 | ||||
| MOS Social Support | 13.6 (5.0) | 13.3 (5.6) | 1.01 (0.97, 1.06) | 0.601 | 1.01 (0.96, 1.06) | 0.750 |
a
Transformed into quartiles and entered into models as linear categorical variable
b
Odds Ratio (95% Confidence Interval); 95% CIs are calculated using robust variance estimates
c
Likelihood Ratio Test p-value
d
Adjusted for site (VA or non-VA), sex, age, income, and WOMAC total score
MOS=Medical Outcomes Study; WOMAC=Western Ontario McMaster Instrument