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Table 9 Relative MCID of 30% improvement after total knee replacementb

From: Patient-reported health outcomes after total hip and knee surgery in a Dutch University Hospital Setting: results of twenty years clinical registry

  T = 6 months T = 12 months
WOMAC 82.5% (N = 200) 79% (N = 210)
KSS function scorea 68.1% (N = 213) 68.5% (N = 219)
VAS paina 80.7% (N = 212) 84.9% (N = 205)
  1. aPatients with pre-operative score of 0 points were equaled to 1 point, because it is not possible to establish relative differences from a baseline value 0
  2. bWOMAC: 0% were removed because of ceiling. KSS function: 4.6% were removed because of ceiling. VAS pain 2.9% were removed because of ceiling