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Table 2 Explanatory factor analysis with promax-rotated factor loadings of the Constant-Murley Score items

From: Chinese version of the Constant-Murley questionnaire for shoulder pain and disability: a reliability and validation study

Constant-Murley score item

Score of each item

Principal Component Coefficients ≥0.4

Factor 1

Factor 2

Pain

5.24 ± 2.86

0.569

 

Activities of daily living

11.32 ± 6.00

 Work

1.84 ± 1.12

 

0.766

 Recreation/sport

1.67 ± 1.12

 

0.794

 Sleep

0.88 ± 0.67

 

0.498

 Positioning

6.14 ± 3.72

 

0.645

Range of motion

20.22 ± 8.20

 Forward elevation

5.96 ± 2.52

0.766

 Lateral elevation

5.82 ± 2.21

0.848

 External rotation

3.67 ± 2.84

0.407

 Internal rotation

4.99 ± 2.32

0.753

Power

22.57 ± 1.13

0.649