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Table 5 Sensitivity analysis comparing WOMAC pain and function by Immigrant proportion subgroups after matching

From: Living in immigrant communities does not impact total knee arthroplasty outcomes: experience from a high-volume center in the United States

  WOMAC pain Estimate ± SE p-value WOMAC function Estimate ± SE p-value
Pre-operative, univariate
 Immigrant proportion
   < 10% reference reference
  10% – <  40% −1.34 ± 1.47 0.360 −2.42 ± 1.41 0.087
   ≥ 40% −4.21 ± 1.47 0.004 −5.98 ± 1.42 < 0.001
Pre-operative, multivariablea
 Immigrant proportion
   < 10% reference reference
  10% – <  40% −0.66 ± 1.50 0.659 − 1.67 ± 1.44 0.244
   ≥ 40% −1.47 ± 1.76 0.403 − 2.76 ± 1.67 0.098
2-year post-operative, univariate
 Immigrant proportion
   < 10% reference reference
  10% – <  40% 0.03 ± 1.26 0.978 −1.05 ± 1.33 0.429
   ≥ 40% −1.97 ± 1.26 0.119 − 2.25 ± 1.34 0.094
2-year post-operative, multivariablea
 Immigrant proportion
   < 10% reference Reference
  10% – <  40% 0.37 ± 1.29 0.772 − 0.60 ± 1.37 0.659
   ≥ 40% −1.58 ± 1.52 0.298 − 1.13 ± 1.60 0.482
  1. SE standard error, WOMAC Western Ontario and McMaster Universities Osteoarthritis Index
  2. Patients were matched on age, sex, BMI and comorbidities (none v. ≥ 1)
  3. aMultivariable models adjusted for education level, live alone and census tract percent poverty