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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