Table 2: Mean, Standard Deviation, Change, ICC between different assessments of each subscale.

HOOS Subscales

HOOS Score

Change*

ICC (95% CI)

Cronbach's alpha (95% CI)

First assessment

Second assessment

Third assessment

Mean

SD

Mean

SD

Mean

SD

Symptom

56.32

15.43

51.51

16.32

44.24

17.69

-12.08

0.615 (0.410-0.749)

0.827 (0.675-0.899)

Pain

48.63

15.70

43.56

15.68

35.44

18.09

-13.19

0.568 (0.353-0.714)

0.798 (0.621-0.882)

ADL

49.58

16.92

44.93

16.98

36.22

19.99

-13.36

0.561 (0.371-0.699)

0.793 (0.639-0.874)

Sport/Recreation

50.94

17.92

45.51

19.17

37.50

20.95

-13.44

0.561 (0.389-0.690)

0.793 (0.657-0.870)

QoL

45.87

15.71

42.21

15.99

34.78

18.26

-11.09

0.566 (0.400-0.692)

0.796 (0.666-0.871)

*Minus sign means that the condition of patient has been worsened over time (Lower score = Deterioration).