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Table 5 Multivariable analysis of post-operative (12 months) changes in TKA WOMAC domains

From: Patient-reported quality of life after primary major joint arthroplasty: a prospective comparison of hip and knee arthroplasty

  WOMACa
Pain Function Stiffness
Variables Diffb 95 % CI P-value Diff 95 % CI P-value Diff 95 % CI P-value
Gender          
 Male vs Female 0.02 0.84, 0.88 0.2 1.30 −1.68, 4.28 0.4 −0.15 −0.52, 0.23 0.4
Age          
  < 65 vs ≥65 −0.48 1.28, 0.31 0.9 −2.47 −5.23, 0.28 0.07 −0.18 −0.53, 0.17 0.3
BMI          
  < 30 vs ≥30 −0.15 0.85, 0.54 0.6 −0.97 −3.41, 1.46 0.4 −0.06 −0.37, 0.24 0.4
Education          
 Lowc vs High −0.72 1.69, 0.44 0.06 −3.08 −6.76, 0.59 0.09 −0.16 −0.70, 0.28 0.8
Social Support          
 Yes vs No −0.86 1.82, 0.09 0.07 −2.24 −5.55, 1.06 0.1 −0.17 −0.59, 0.25 0.4
Residence          
 Rural vs Urban/semi −0.52 1.10, 0.42 0.05 −2.25 −4.87, 0.38 0.09 −0.15 −0.59, 0.22 0.06
 Pre-intervention Pain 0.10 2.29, 0.02 0.02 - - - - - -
 Pre-intervention Function - - - 0.17 0.06, 0.28 0.002 - - -
 Pre-intervention Stiffness - - - - - - 0.07 −0.02, 0.17 0.1
  1. aWOMAC scores: pain 0–20, function 0–68, stiffness 0–8; higher scores indicate greater difficulty
  2. bEstimated differences between categories after adjustment by all other variables
  3. cElementary or less; − Not applicable