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Table 4 Multivariable analysis of post-operative (12 months) changes in THA 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 0.09 −0.58, 0.60 0.9 −2.12 −5.00, 0.8 0.2 −0.48 −1.19,1.16 0.2
Age          
  < 65 vs ≥65 vs −0.21 −1.90, 0.47 0.5 2.33 −1.06, 5.73 0.2 −0.14 −0.19, 0.47 0.4
BMI          
  < 30 vs ≥30 −0.29 −0.99, 0.40 0.4 −1.73 −5.29, 1.81 0.3 −0.19 −0.53, 0.14 0.3
Education          
 Lowc vs High −0.35 −1.55, 0.84 0.6 0.85 −5.07, 6.78 0.7 0.09 −0.67, 0.49 0.7
Social Support          
 Yes vs No −0.38 −1.13, 0.35 0.3 −0.19 −3.88, 3.51 0.9 −0.15 −0.51, 0.20 0.4
Residence          
 Rural vs Urban/semi −0.43 −0.38, 1.24 0.3 0.20 −3.83, 4.23 0.9 −0.22 −0.17, 0.61 0.3
 Pre-intervention Pain 0.11 2.29, 0.02 0.03 - - - - - -
 Pre-intervention Function - - - 0.21 0.05, 0.36 0.01 - - -
 Pre-intervention Stiffness - - - - - - 0.94 −0.02, 0.18 0.04
  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