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Table 2 Independent predictors associated with change in the OKS from 6 to 12 months after TKA

From: One-year Oxford knee scores should be used in preference to 6-month scores when assessing the outcome of total knee arthroplasty

Demographic Descriptive Change in OKS 95% CI P value
BMI   −0.07 − 0.13 to − 0.02 0.011
Comorbidity Not present Reference   
Diabetes mellitus −1.2 −2.07 to −0.30 < 0.001
Functional measures
OKS Preoperative 0.14 0.10 to 0.18 < 0.001
6 Months −0.31 −0.37 to − 0.26 < 0.001
EQ 5D 6 Months 4.80 2.66 to 6.94 < 0.001
  1. Linear regression analysis: all significant (p < 0.05) variables or variables with a trend towards statistical significance (p < 0.1) were entered into the model. The R2 value of the model was 0.12
  2. TKA total knee arthroplasty, OKS Oxford Knee Score; EQ 5D EuroQoL 5-Dimension questionnaire, BMI body mass index, CI confidence interval