Table 2 Four extracted factors of the caregiver burden questionnaire and their factor loadings (N = 300)

Physical and psychological burden

1- My physical health is endangered due to taking care of my patient

0.837

0.611

3.0072

14.32

2- Accompanying my patient in the hemodialysis center makes me tired

0.707

0.515

8- I feel I can no longer continue to take care of my patient

0.695

0.386

9- I do not sleep well because of taking care of my patient

0.604

0.579

3- Because of my patient, my diet has been disrupted

0.481

0.461

24- The burden of caring for my patient has reduced my sexuality

.0475

0.455

4- Taking care of my patient has made me feel depressed

.0455

.0481

18- After starting hemodialysis, I am responsible for my patient and my own life

0.387

0.474

20- The non-cooperation of other family members in caring has imposed a significant burden on me

0.381

0.376

Social-time burden

14.- My recreation has decreased due to taking care of my patient

0.937

0.829

2.8699

13.666

16- I can travel less than before

0.908

0.720

15- My relationships with others have diminished because of caring for my patient

0.80

0.725

10- My patient's hemodialysis schedule determines my life plan

0.622

0.535

25- One of my difficulties is monitoring my patient’s medication and nutrition

0.375

0.405

Mental burden

6- I am worried that I have failed to take care of my patient

0.810

0.552

1.9350

9.214

13- I am afraid of my patient’s future

0.692

0.608

7- I feel that I cannot do anything about my patient's problems

0.635

0.477

5- I am constantly thinking about my patient

0.630

.0546

Supportive-financial burden

28- I cannot afford my patient’s care

0.886

0.678

1.8516

8.817

27- My patient's lack of full health insurance coverage has imposed a financial burden on me

0.871

0.748

21- The weakness of the support system (government and charity) for the patient and caregiver has burdened me

0.555

0.453