Table 3 Unadjusted association of income with pain, activity limitation and improvement in knee function after primary total knee arthroplasty
From: Income and patient-reported outcomes (PROs) after primary total knee arthroplasty
| Â | 2 years | 5 years | ||||||
|---|---|---|---|---|---|---|---|---|
| Â | Odds ratio (95% CI) | Pvalue | Odds ratio (95% CI) | Pvalue | Odds ratio (95% CI) | Pvalue | Odds ratio (95% CI) | Pvalue |
Pain/function: | Moderate to severe pain | Moderate to severe functional limitation | Moderate to severe pain | Moderate to severe functional limitation | ||||
≤ US$35, 000 | 0.68 (0.50 to 0.92) | 0.01 | 0.82 (0.67 to 0.99) | 0.04 | 0.86 (0.60 to 1.22) | 0.39 | 0.92 (0.74 to 1.15) | 0.47 |
> US$35, 000 to US$45, 000 | 0.80 (0.64 to 1.01) | 0.06 | 0.99 (0.85 to 1.15) | 0.90 | 0.90 (0.65 to 1.25) | 0.55 | 1.00 (0.82 to 1.23) | 0.99 |
> US$45, 000 (ref) | 1.00 | Â | 1.00 | Â | 1.00 | Â | 1.00 | Â |
Improvement: | Better | Much better | Better | Much better | ||||
≤ US$35, 000 | 1.5 (0.9 to 2.4) | 0.13 | 1.1 (0.7, 1.7) | 0.61 | 1.2 (0.7 to 2.0) | 0.57 | 1.2 (0.8 to 1.9) | 0.39 |
> US$35, 000 to US$45, 000 | 1.1 (0.7 to 1.6) | 0.72 | 1.0 (0.7 to 1.5) | 0.83 | 1.1 (0.7 to 1.7) | 0.78 | 1.1 (0.8, 1.7) | 0.56 |
> US$45, 000 (ref) | 1.00 | Â | 1.00 | Â | 1.00 | Â | 1.00 | Â |