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Table 2 Prospectively tabulated WOMAC hip and knee total scores

From: Patient-reported quality of life after primary major joint arthroplasty: a prospective comparison of hip and knee arthroplasty

WOMAC total score N THA N TKA P
Preoperatively 174 61.3 ± 15.8 204 54.3 ± 14.4 <0.0001
6-wks post-op 174 47.1 ± 12.0 01 46.9 ± 15.9 0.9
3-m post-op 173 30.9 ± 10.2 198 26.7 ± 12.6 0.001
6 m post-op 172 18.1 ± 12.2 193 14.5 ± 12.1 0.007
12 m post-op 169 14.7 ± 9.7 184 9.6 ± 10.0 <0.0001
WOMAC total change score      
 Pre-op – 12 monthsa   46.6(43.4–49.8)   44.7(41.3–48.0)  
 ES Pre-op – 12 months   2.9   3.1  
  1. WOMAC total score: 0–96, higher scores indicate greater difficulty
  2. ES = effect size
  3. aValues are mean (95 % confidence interval)