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Table 6 Item-total correlation of the fourteen sub scales

From: Prevalence of complaints of arm, neck and shoulder among computer office workers and psychometric evaluation of a risk factor questionnaire

Domain

Sub Scales

Item-total correlation (Min-Max)

Items numbers

Work Station

Sub scale 1: Office equipment

0.14 to 0.32

10.11.1216

 

Sub scale 2: Computer position

0.59

14.15

Body Posture

Sub scale 3: Awkward body posture

0.30 to 0.57

18.19.20.21.22

 

Sub scale 4: Head and body posture

0.38 to 0.45

25.26.27

Job Control

Sub scale 5: Decision authority

0.37 to 0.61

28.29.30.31.32

 

Sub scale 6: Skill discretion

0.28 to 0.51

33.34.35.36

Job Demand

Sub scale 7: Work pressure

0.50 to 0.75

37.38.39.40.41

 

Sub scale 8: Task complexity

0.54

42.43

Social Support

Sub scale 9: Social support

0.58 to 0.67

64.65.66.67.68

 

Sub scale 10: Work flow

0.28 to 0.38

61.62.63

Break Time

Sub scale 11: Autonomy

0.47 to 0.58

44.45.46

 

Sub scale 12: Break quality

0.39 to 0.60

47.48.49.50