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Table 2 Test-retest reliability of the Pedi-IKDC and KOOS-Child subscales (n = 59)

From: Pedi-IKDC or KOOS-child: which questionnaire should be used in children with knee disorders?

 

Mean score T0 (SD)

Mean score T1 (SD)

Mean difference (SD)

ICC

95% CI

SEM

SDC

Pedi-IKDC

54.5 (19.7)

55.4 (20.0)

0.9 (12.1)

0.9

0.8 to 0.9

8.6

23.8

KOOS-Child Symptoms

68.2 (22.8)

70.3 (19.8)

2.1 (14.5)

0.9

0.8 to 0.9

10.2

28.4

KOOS-Child Pain

62.0 (23.8)

63.1 (23.1)

1.1 (13.9)

0.9

0.8 to 1.0

9.9

27.3

KOOS-Child ADL

77.8 (21.1)

78.0 (22.5)

0.2 (12.6)

0.9

0.8 to 1.0

8.9

24.7

KOOS-Child Sport/play

41.6 (30.3)

46.6 (30.9)

5.0 (23.9)

0.8

0.7 to 0.9

16.9

46.9

KOOS-Child QOL

47.9 (22.1)

47.3 (24.0)

0.6 (14.9)

0.9

0.8 to 0.9

10.5

29.2

  1. n number of patients, SD Standard Deviation, ICC Intraclass Correlation Coefficient, CI Confidence Interval, SEM Standard Error of the Mean, SDC Smallest Detectable Change, IKDC The International Knee Documentation Committee Subjective Knee Form, KOOS Knee injury and Osteoarthritis Outcome Score, ADL Activities of Daily Living, QOL Quality Of Life