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Table 3 Multivariable-adjusted a association of ipsilateral knee/hip involvement with outcomes after primary total hip or knee arthroplasty (THA/TKA)

From: Ipsilateral lower extremity joint involvement increases the risk of poor pain and function outcomes after hip or knee arthroplasty

  THA TKA
2 years 5 years 2 years 5 years
Odds ratio (95% CI) Pvalue Odds ratio (95% CI) Pvalue Odds ratio (95% CI) Pvalue Odds ratio (95% CI) Pvalue
Primary:         
Moderate severe pain (ref, none) 2.3 (1.5 to 3.6) <0.001 1.8 (1.1 to 2.7) <0.01 3.3 (2.3 to 4.7) <0.001 1.8 (1.1 to 2.7) <0.01
Moderate severe activity limitation (ref, none) 3.1 (2.3 to 4.3) <0.001 3.6 (2.6 to 5.0) <0.001 3.6 (2.6 to 4.9) <0.001 2.2 (1.6 to 3.2) <0.001
Revision:         
Moderate severe pain (ref, none) 1.9 (1.1 to 3.1) 0.01 2.2 (1.2 to 4.0) <0.01 2.0 (1.1 to 3.8) 0.02 NEb -
Moderate severe activity limitation (ref, none) 3.6 (2.2 to 5.8) <0.001 8.8 (4.3 to 17.6) <0.001 2.9 (1.4 to 5.8) 0.003 2.3 (1.0 to 5.0) 0.043
  1. Adjusteda for age, gender, body mass index, comorbidity, American Society of Anesthesiologists (ASA) class, operative diagnosis, distance from the medical center, preoperative pain (for pain outcomes) and preoperative function (for function outcomes); additionally adjusted for implant fixation (cemented or not) in primary THA.
  2. NEb, not estimable (too few cases with this outcome).