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Table 3 Standardized factor loadings in the bifactor model (Bifactor 2)

From: Viability of a MSQOL-54 general health-related quality of life score using bifactor model

Scales Items Factor loading
General HRQOL factor Group factor
Physical function 3. Vigorous activities 0.553 0.445
4. Moderate activities 0.594 0.622
5. Lift, carry groceries 0.554 0.620
6. Climb several flights 0.569 0.665
7. Climb one flight 0.533 0.695
8. Bend, kneel 0.551 0.594
9. Walk mile 0.555 0.669
10. Walk several blocks 0.526 0.734
11. Walk one block 0.488 0.726
12. Bath, Dress 0.461 0.523
Role limitations due to physical problems 13. Cut down time 0.542 0.537
14. Accomplished less 0.571 0.571
15. Limited in kind 0.581 0.645
16. Had difficulty 0.594 0.586
Role limitations due to emotional problems 17. Cut down time 0.504 0.646
18. Accomplished less 0.515 0.699
19. Not careful 0.509 0.592
Bodily pain 21. Pain magnitude 0.575 0.702
22. Pain interfere with work 0.611 0.653
52. Pain interfere with enjoyment 0.601 0.652
Emotional wellbeing 24. Nervous person 0.371 0.531
25. Down in dumps 0.561 0.585
26. Peaceful 0.562 0.369
28. Blue/Sad 0.594 0.592
30. Happy 0.535 0.432
Energy 23. Pep/life 0.713 0.206
27. Energy 0.717 0.245
29. Worn out 0.624 0.546
31. Tired 0.620 0.602
32. Rested on walking in the morning 0.519 0.281
Health perceptions 1. EVGFP rating 0.638 0.452
34. Sick easier 0.417 0.269
35. As healthy 0.463 0.575
36. Health to get worse 0.450 0.233
37. Health excellent 0.590 0.659
Cognitive function 42. Concentration and thinking 0.591 0.710
43. Sustained attention 0.576 0.700
44. Memory 0.467 0.708
45. Others note troubles with memory/concentration 0.436 0.564
Health distress 38. Discouraged 0.729 0.508
39. Frustrated 0.712 0.544
40. Worried for life 0.624 0.543
41. Weighed down 0.694 0.563
Sexual function 46. Lack if sexual interest 0.346 0.684
47. Erection/Lubrication 0.299 0.758
48. Orgasm 0.348 0.724
49. Satisfy sexual partner 0.378 0.656
Social function 20. Social extent, physical health 0.737
33. Social time 0.758
51. Social extent, bowel or bladder 0.505
Overall quality of life 53. 0–10 NRS rating 0.735
54. TUMMMPO rating 0.685
  1. EVGFP, Excellent, Very good, Good, Fair, Poor. HRQOL, health-related quality of life. NRS, Numeric Rating Scale. TUMMMPO, Terrible, Unhappy, Mostly dissatisfied, Mixed—about equally satisfied and dissatisfied, Pleased, Delighted
  2. Correlations between residuals: 0.524 (items 53 and 54); 0.411 (items 20 and 33)
  3. Coefficients < 0.40 are reported in bold; all the loadings are statistically significant at p < 0.001