Table 1. EFA of 4 factor model (n = 180).

Item	Factor Loading (FL)
	F1	F2	F3	F4
19. Nervousness	0.757
02. Disruption of sleep	0.745
03. Impact on daily schedule	0.740
01. Alteration in daily routine	0.735
14. Sadness	0.721
18. Frustration	0.666
10. Outlook on life	0.661
13. Day-to-day focus	0.660
15. Mental strain	0.659
11. Level of stress	0.624
33. Future outlook	0.568
29. Change in priorities	0.565
17. Guilt	0.540
09. Death of patient	0.530
20. Impact of illness on family	0.498
23. Informed about illness	0.361*
28. Family communication		0.589
22. Relationship with patient		0.546
27. Focus of caregiving		0.494
34. Family support		0.463
21. Patient’s eating habits		0.407
12. Spirituality		0.376*
16. Social support	0.352*	0.373*	0.322*
06. Financial strain			0.693
07. Concern about insurance			0.669
08. Economic future			0.650
26. Responsibility for patient’s care			0.581
24. Transportation			0.524
35. Family interest in caregiving			0.298*
05. Maintenance of outside activity				0.862
25. Adverse effect of treatment				0.862
32. Management of patient’s pain				0.493
30. Protection of patient				0.450
31. Deterioration of patient				0.440
04. Satisfaction with sexual functioning				0.419
Eigenvalue	7.975	3.307	2.915	1.863
Variance, %	22.785	9.447	8.329	5.323
Cumulative variance	22.785	32.232	40.562	45.885
Removed	12, 16, 23, 35

*:FL＜0.4