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Table 3 Differences in QoL scores between the examine intervals (baseline,6 weeks,3 -6-12-months)*

From: Factors affecting the quality of life after total knee arthroplasties: a prospective study

  Baseline-6 weeks 6 weeks-3 months 3 months-6 months 6 months-12 months Baseline-12 months Effect size Baseline-12 m
WOMAC       
Pain 3.1(1.9-4.2)† 4.0(2.9-5.3)† 1.8(1.4-2.4)† 1.3(0.5-1.0)† 10.2(9.4-11.5)†† 2.5
Function 1.8(−1.2- 5.4) 16.5(13.5-18.8)† 9.4(7.4(11.2)† 3.5(5.0-1.9)† 31.2(28.8-34.7)†† 2.7
Stiffness 0.6(−0.1-1.4) 1.0(0.7-1.3)† 0.8 (0.5-0.9)† 0.9 (0.6-1.0)† 3.3(2.8-3.7)†† 2.0
KSS       
Knee score - −36.7(−41.2- -32.3)† −8.6(−11.1- -6.1)† −2.9(1.1-4.7)† −48.7(−54.5-45.2)†† 2.7
Function score - −17.2 (−20.4- -3.7)† −11.5(−14.2 -8.8)† −5.6(−7.7 -3.4)† −34.2(−37.5-30.8)†† 2.8
Pain VAS 2.6(2.0-3.1)† 2.0(1.6-2.5)† 1.7(1.2-2.1)† 0.8(−0.4 - 1.1) 7.1(6.5-7.6)†† 3.9
CES-D10 1.5(−0.3-3.1)† 2.8(1.6-4.1)† 1.2(0.3 -2.3)† 1.0(−0.3-1.8)† 6.6(4.9-7.9)†† 1.0
  1. * Values are mean (95% confidence interval of the difference); Repeated measures GLM with post-hoc Bonferroni’s correction.
  2. † P < 0.05 †† P < 0.001; - Not applicable.
  3. WOMAC scores:pain 0–20,function 0–68,stiffness 0–8,higher scores indicate greater difficulty.
  4. KSS: Knee score 100–0, Functional score 100–0, higher scores indicate a better health state.
  5. CES-D10 scores: > 10 indicate depression; Pain VAS: 0–10, better to worse.