Table 2 Final factor loadings after forced two factor solution and exclusion of items
Item | Pattern coefficients | Structure coefficients | ||
|---|---|---|---|---|
Does your work involve … | Factor 1 | Factor 2 | Factor 1 | Factor 2 |
17. Physical hard work? | 0.84 | 0.86 | ||
13. Moving loads (more than 5 kg)? | 0.83 | 0.83 | ||
12. Work (ing) with your hands below knee level? | 0.80 | 0.79 | ||
11. Work (ing) with your hands above shoulder level? | 0.78 | 0.80 | ||
23. Squatting often? | 0.78 | 0.74 | ||
14. Moving heavy loads (more than 25 kg)? | 0.77 | 0.77 | ||
15. Exerting force with your arms or hands? | 0.75 | 0.30 | 0.80 | 0.42 |
5. Kneeling or squatting for long periods of time? | 0.75 | 0.75 | ||
4. Walking long periods of time? | 0.73 | 0.70 | ||
25. Sitting or moving on your knees? | 0.71 | 0.74 | ||
16. Exerting maximal force? | 0.70 | 0.74 | ||
1. Standing for long periods of time? | 0.66 | 0.64 | ||
24. Walking on irregular surfaces? | 0.61 | 0.64 | ||
7. Working in a twisted posture for long periods of time? | 0.60 | 0.46 | 0.61 | 0.56 |
20. Working with vibrating tools? | 0.57 | 0.58 | ||
6. Making the same movement for long periods of time for long periods of time? | 0.83 | 0.82 | ||
18. Working in the same position for long periods of time? | −0.37 | 0.82 | 0.76 | |
10. Holding your wrist in a bent or twisted position for long periods of time? | 0.75 | 0.77 | ||
26. Doing repetitive tasks with arms, hands or fingers many times per minute? | 0.72 | 0.69 | ||
8. Holding your neck in a bent forward or twisted position for long periods of time? | 0.63 | 0.66 | ||
9. Bending or twisting your neck often? | 0.33 | 0.62 | 0.43 | 0.67 |
19. Working in uncomfortable postures? | 0.39 | 0.56 | 0.49 | 0.62 |
Eigenvalue | 9.15 | 3.66 | ||
Variance explained | 41.6% | 16.7% | ||
Total variance explained | 58.3% | |||