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Table 2 Test validity and reliability of Forgotten Joint Score within 12 months after total knee arthroplasty

From: Forgotten Joint Score for early outcome assessment after total knee arthroplasty: Is it really useful?

Dimension Test Subjects, n Correlation P value
Convergent construct validity Pearson correlation 163   
WOMAC pain    −0.50 <0.001*
WOMAC stiffness    −0.42 <0.001*
WOMAC function    −0.51 <0.001*
WOMAC overall    −0.52 <0.001*
Internal consistency Cronbach’s α 125 0.96
  1. Abbreviation: WOMAC Western Ontario and McMaster Universities Arthritis Index
  2. * P <0.05