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Table 3 Impact of neighborhood immigrant proportion (IP) on WOMAC pain and function (unadjusted/ univariate models)

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

  Preoperative estimate ± standard error Postoperative 2-year estimate ± standard error
  WOMAC pain p-value WOMAC function p- value WOMAC pain p-value WOMAC function p-value
Census Tract immigrant proportion (IP)
  <  10% reference reference reference reference
 10% – <  40% −0.21 ± 0.69 0.76 −0.14 ± 0.70 0.84 −1.79 ± 0.58 0.002 − 1.32 ± 0.60 0.03
  ≥ 40% −3.60 ± 1.15 0.002 −4.88 ± 1.15 < 0.001 − 2.75 ± 1.00 0.006 −3.10 ± 1.03 0.003
Age, years 0.38 ± 0.03 < 0.001 0.15 ± 0.03 < 0.001 0.06 ± 0.03 0.02 − 0.32 ± 0.04 < 0.001
BMI, kg/m2 − 0.62 ± 0.05 < 0.001 − 0.73 ± 0.05 < 0.001 − 0.24 ± 0.04 < 0.001 − 0.32 ± 0.04 < 0.001
Sex: female −5.94 ± 0.57 < 0.001 −6.66 ± 0.57 < 0.001 − 2.62 ± 0.52 < 0.001 − 2.65 ± 0.53 < 0.001
Comorbidities
 One or more −1.15 ± 0.64 0.07 − 2.01 ± 0.64 0.002 −1.91 ± 0.57 < 0.001 − 3.10 ± 0.59 < 0.001
 None reference reference reference reference
Census tract poverty
  <  10% 4.24 ± 1.30 0.001 3.80 ± 1.30 0.004 − 3.50 ± 0.73 < 0.001 − 3.36 ± 0.76 < 0.001
 10% – <  20% 0.94 ± 1.49 0.53 − 0.49 ± 1.49 0.74 −1.61 ± 0.64 0.01 − 1.75 ± 0.67 0.009
  ≥ 20% reference reference reference reference
Education level
  < College graduate −7.57 ± 0.37 < 0.001 −8.82 ± 0.59 < 0.001 − 3.88 ± 0.53 < 0.001 −3.95 ± 0.55 < 0.001
  ≥ College graduate reference reference reference reference
Live alone
 No 0.63 ± 0.69 0.36 2.57 ± 0.69 < 0.001 2.22 ± 0.61 < 0.001 2.68 ± 0.63 < 0.001
 Yes reference reference reference reference
  1. WOMAC Western Ontario and McMaster Universities Osteoarthritis Index, BMI body mass index