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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