Table 6

Internal consistency of the twelve Factors

Domain
Factors
Internal consistency
(Cronbach's alpha)
Items numbers

Work Station
Factor 1: Office equipment
0.50
13.17.18.20

Factor 2: Computer position
0.48
16.19
Body Posture
Factor 3: Head and body posture
0.88
25.26.27.28. 29.30

Factor 4: Awkward body posture
0.66
21. 22. 24. 32
Break Time
Factor 5: Autonomy
0.76
50.51.54.55

Factor 6: Break quality
0.79
47.48.52.53.56
Job Control
Factor 7: Skill discretion
0.84
31.32.33.34.36.37

Factor 8: Decision authority
0.76
35.38.39
Job Demands
Factor 9: Time pressure
0.71
41.42.45.

Factor 10: Task complexity
0.53
40.43.46
Social Support
Factor 11: Social support
0.94
70.71.72.73.74.75.76

Factor 12: Work flow
0.76
65.66.67.68.69

Eltayeb et al. Environmental Health 2008 7:33   doi:10.1186/1476-069X-7-33