Table 5 Loadings from nonlinear exploratory factor analysis with 56 items and 13 factors

1. Relatives worry alcohol consumption

0.93

2. Need to cut down on alcohol consumption

0.71

3. Thoughts of suicide

0.88

4. Anxious or nervous

0.79

5. Restless and irritable

0.89

6. Sad most of the time

0.89

7. Difficulty in concentrating

0.64

8. Little interest in relationships or activities

0.67

9. Excessive daytime drowsiness

0.32

10. Sleep difficulty

0.42

11. Fatigue

0.93

12. Fearful of safety

0.81

13. Afraid in home

0.94

14. Tendency to fall easily

0.36

0.59

15. Coughing

0.85

16. Shortness of breath

0.46

17. Wheezing

1.03

0.37

18. Had no symptom

19. Difficulty with pain

0.47

20. Abnormal swelling in legs or feet

0.61

21. Back pain

0.69

22. Difficulty moving an arm or a leg

0.35

23. Joint pain

0.33

0.80

24. Joint swelling

0.54

0.62

25. Muscle pain

0.89

26. Changes in bowel movement

0.46

27. Loss of appetite

0.95

28. Nausea

0.61

29. Diarrhea

0.72

30. Weight loss of > 10 lbs

0.69

31. Constipation

0.42

32. Weight gain of > 10 lbs

0.41

33. Difficulty swallowing

0.33

34. Leaking urine

0.45

35. Diminished hearing

36. Headaches

0.36

37. Family or friends who can assist with homecare needs

38. divorced or widowed in the past year

-0.34

39. In committed relationships

1.00

40. Lives alone

1.02

41. Lives in housing facility with assistance

0.40

42. Living wills or advance directives

43. Can climb two flights of stairs without stopping

0.39

0.41

44. Difficulty climbing stairs by myself

0.82

0.43

45. No difficulty performing activities of daily life

0.71

0.48

46. Difficulty walking by myself

-0.54

0.69

0.55

47. Depend on assistive devices or assistance from others in daily life

0.71

0.32

0.47

48. Difficulty bathing

0.94

49. Difficulty dressing

0.91

50. Difficulty eating

0.88

51. Difficulty housekeeping

0.80

52. Difficulty taking medications

0.86

53. Difficulty of transportation

0.85

54. Difficulty using toilet

0.90

55. Difficulty getting in and out of bed

0.90

56. Difficulty preparing meals

0.93