From: Income and patient-reported outcomes (PROs) after primary total knee arthroplasty
 | 2 years | 5 years | ||||||
---|---|---|---|---|---|---|---|---|
 | Moderate to severe pain | Moderate to severe functional limitation | Moderate to severe pain | Moderate to severe functional limitation | ||||
 | Odds ratio (95% CI) | P value | Odds ratio (95% CI) | P value | Odds ratio (95% CI) | P value | Odds ratio (95% CI) | P value |
≤ US$35, 000 | 0.61 (0.40 to 0.94) | 0.02 | 0.78 (0.60 to 1.02) | 0.07 | 0.77 (0.50 to 1.19) | 0.24 | 0.91 (0.68 to 1.25) | 0.56 |
> US$35, 000 to US$45, 000 | 0.68 (0.49 to 0.94) | 0.02 | 0.96 (0.78 to 1.20) | 0.75 | 0.90 (0.60 to 1.34) | 0.60 | 1.09 (0.83 to 1.44) | 0.52 |
> US$45, 000 (ref) | 1.00 | Â | 1.00 | Â | 1.00 | Â | 1.00 | Â |