# Table 2 Item total correlation, Cronbach’s α for excluded items, and mean Cronbach’s α for each domain of the Brazilian Portuguese version of the Upper Extremity Questionnaire revised (MUEQ-Br revised)

Question Item total correlation Cronbach’s α for excluded items
Work Station (Maximum domain score = 6 points)
1. My desk (table) at work has suitable height. 0.52 0.71
2. I can adjust my chair height. 0.28 0.70
3. The chair I use during my work supports my lower back. 0.35 0.70
4. My keyboard is placed directly in front of me. 0.36 0.72
5. The screen is placed directly in front of me. 0.48 0.70
6. I have enough space to work at my office. 0.36 0.70
Mean Cronbach’s α for the domain = 0.70
Body posture (Maximum domain score = 18 points)
7. During my work, I sit in an awkward body posture. 0.51 0.73
8. At work, I perform repetitive tasks. 0.59 0.72
9. I find my job physically exhausting. 0.65 0.72
10. My head is twisted towards the left or right. 0.42 0.74
11. My trunk is twisted towards the left or right. 0.68 0.71
12. My trunk is in a misaligned position 0.44 0.74
Mean Cronbach’s α for the domain = 0.75
Job control (Maximum domain score = 27 points)
13. I decide how to perform my job task. 0.54 0.74
14. I participate with others in decision making. 0.61 0.72
15. I decide my own task changes. 0.60 0.73
16. I determine the time and speed of job tasks. 0.53 0.74
17. I solve work problems by myself. 0.38 0.74
18. My work develops my abilities. 0.68 0.72
19. In my work, I learn new things. 0.64 0.73
20. I have to be creative in my work. 0.62 0.72
21. I undertake different tasks in my work. 0.47 0.74
Mean Cronbach’s α for the domain = 0.75
Job demand (Maximum domain score = 21 points)
22. I work under extensive pressure. 0.66 0.74
23. I find it difficult to finish my work tasks on time. 0.71 0.73
24. I take extra hours to finish my work tasks. 0.61 0.74
25. I do not have enough time to finish my job task. 0.63 0.74
26. At work, I speed to finish my tasks on time. 0.65 0.75
27. I find my work tasks difficult. 0.55 0.76
28. I have too many job tasks. 0.55 0.75
Mean Cronbach’s α for the domain = 0.77
Break time (Maximum domain score = 18 points)
29. I can plan my work breaks. 0.69 0.73
30. I can divide my work time. 0.65 0.73
31. I can decide when to take a break. 0.67 0.74
32. I alternate my body posture. 0.51 0.75
33. I alternate my job task.   0.56
34. I find my work breaks sufficient. 0.57 0.73
Mean Cronbach’s α for the domain = 0.77
Social Support (Maximum domain score = 18 points)
35. The workflow goes smoothly. 0.60 0.75
36. My work task depends on other colleagues. 0.64 0.75
37. My work atmosphere is comfortable. 0.60 0.75
38. If I make a mistake in my work task, I find support from my colleagues. 0.66 0.75
39. If I make a mistake in my work task, I find support from my supervisors. 0.75 0.74
40. My colleagues are friendly. 0.58 0.76
41. My supervisors are friendly. 0.73 0.74
Mean Cronbach’s α for the domain = 0.77