Table 5 Internal consistency and Item-total correlation of the twelve Factors
Domain | Factors | Internal consistency (Cronbach's alpha) | Item-total correlation (Min-Max) | Items numbers |
|---|---|---|---|---|
Work Station | Factor 1: Work area | 0.46 | 0.18 to 0.39 | 9,10,15 |
Factor 2: Computer position | 0.43 | 0.14 to 0.37 | 11,13,14 | |
Body Posture | Factor 3: Incorrect body posture | 0.74 | 0.27 to 0.68 | 23,24,25,26 |
Factor 4: Bad habits | 0.76 | 0.45 to 0.66 | 17,18,19,20,21 | |
Job Control | Factor 5: Skills and abilities | 0.82 | 0.53 to 0.74 | 32,33,34,35 |
Factor 6: Decision making | 0.60 | 0.26 to 0.49 | 27,28,29,30 | |
Job Demands | Factor 7: Time management | 0.82 | 0.61 to 0.72 | 36,37,38,39 |
Factor 8: Work overload | 0.65 | 0.30 to 0.57 | 40.41.42 | |
Break Time | Factor 9: Work breaks | 0.80 | 0.61 to 0.70 | 43,44,45 |
Factor 10: Variation in work | 0.60 | 0.29 to 0.46 | 47,48,49 | |
Social Support | Factor 11: Work environment | 0.73 | 0.47 to 0.63 | 51, 52, 54 |
Factor 12: Social support | 0.68 | 0.34 to 0.63 | 55,56,57 |