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Table 2 Overall changes in WOMAC scores of the participants between enrolment on the pre-surgery waiting lists and 6 months after TKA (n = 141)

From: Prediction of poor outcomes six months following total knee arthroplasty in patients awaiting surgery

  Mean score at enrolment(SD) Mean score 6 months after TKA(SD) Change in score(SD) 95% CI Comparison between time points(p value)
WOMAC      
Pain 53.1 (17.9) 22.5 (17.1) - 30.6 (21.8) - 26.9 to - 34.2 <0.001*
Stiffness 59.3 (19.7) 33.3 (21.1) - 26.0 (20.4) - 21.2 to - 30.8 <0.001*
Function 53.5 (14.3) 28.1 (17.9) - 25.4 (20.5) - 22.0 to - 28.8 <0.001*
Total score 55.3 (15.2) 28.0 (16.3) - 27.3 (15.8) - 23.6 to - 31.0 <0.001*
  1. SD: standard deviation.
  2. CI: confidence interval.
  3. Scores presented as standardised scores. Lower scores sign a better condition.
  4. Negative changes in score sign an improvement of the condition.
  5. *p < 0.05.