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Table 3 Test-retest Reliability and Validity of the Chinese IKDC score and the Subscales of Chinese KOOS

From: Comparing the Chinese versions of two knee-specific questionnaires (IKDC and KOOS): reliability, validity, and responsiveness

 

Mean 1 (SD)

Mean 2 (SD)

ICCc

SEMd

MDCe

Cronbach Alphaf

IKDCa

56.9 (17.7)

58.2 (17.1)

0.97

3.2

8.9

0.87

KOOSb

 Symptoms

70.9 (20.9)

72.1 (20.5)

0.89

7.0

19.4

0.76

 Pain

65.1 (19.8)

64.7 (19.9)

0.91

6.0

16.6

0.88

 ADL

77.1 (22.4)

78.1 (20.1)

0.93

6.2

17.0

0.97

 Sport/Rec

49.5 (29.2)

51.4 (28.1)

0.91

8.8

24.3

0.91

 QOL

43.8 (22.4)

45.1 (22.6)

0.95

5.1

14.2

0.77

  1. aIKDC: International Knee Documentation Committee Subjective Knee Form
  2. bKOOS: Knee Injury and Osteoarthritis Outcome Score
  3. cICC: Intraclass Correlation Coefficient
  4. dSEM: Standard Error of Measurement
  5. eMDC: Minimum Detectable Change
  6. fBased on first measurement (n = 173)