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Table 2 Distribution and internal consistency for the subscales of the C-WORC

From: Cross-cultural translation of the Western Ontario Cuff Index in Chinese and its validation in patients with rotator cuff disorders

Subscale

Mean ± SD

Observed range

Theoretical range

Missing items n (%) a

Floor effect (%) b

Ceiling effect (%) b

Cronbach's Alpha

Overall scale

37.1 ± 13.4

6.0 – 68.7

0 – 100

1 (0.8)

0

0

0.950

Physical symptoms

40.2 ± 15.1

0 – 82.5

0 – 100

0 (0)

1.6

0

0.938

Sports/recreation

33.2 ± 13.6

0 – 72.0

0 – 100

0 (0)

0.8

0

0.911

Work

30.9 ± 15.0

0.5 – 67.5

0 – 100

1 (0.8)

0

0

0.872

Lifestyle

38.1 ± 16.3

0 – 77.8

0 – 100

0 (0)

1.6

0

0.954

Emotions

42.9 ± 26.6

2.3 – 100

0 – 100

1 (0.8)

0

0.8

0.946

  1. C-WORC Chinese version of the Western Ontario Rotator Cuff Index, SD Standard deviation
  2. aNumber of patients with some missing items in the subscale or overall scale
  3. bPercentage of patients with the worst (floor effect) and the best (ceiling effect) score