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Table 6 Internal consistency of the twelve Factors

From: Complaints of the arm, neck and shoulder among computer office workers in Sudan: a prevalence study with validation of an Arabic risk factors questionnaire

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