Table 3 Factor loading values of the ZBI items (n = 120)

5 Do you feel angry when you are around your relative?

9 Do you feel strained when you are around your relative?

13 Do you feel uncomfortable about having friends over because of your relative?

16 Do you feel that you will be unable to take care of your relative much longer?

17 Do you feel you have lost control of your life since your relative’s illness?

18 Do you wish you could leave the care of your relative to someone else?

22 Overall, how burdened do you feel in caring for your relative?

2 Do you feel that because of the time you spend with your relative that you don’t have enough time for yourself?

4 Do you feel embarrassed over your relative’s behavior?

6 Do you feel that your relative currently affects our relationships with other family members or friends in a negative way?

10 Do you feel your health has suffered because of your involvement with your relative?

11 Do you feel that you don’t have as much privacy as you would like because of your relative?

12 Do you feel that your social life has suffered because you are caring for your relative?

1 Do you feel that your relative asks for more help than he/she needs?

8 Do you feel your relative is dependent on you?

15 Do you feel that you don’t have enough money to take care of your relative in addition to the rest of your expenses?

3 Do you feel stressed between caring for your relative and trying to meet other responsibilities for your family or work?

0.50

7 Are you afraid what the future holds for your relative?

0.69

19 Do you feel uncertain about what to do about your relative?

0.68

20 Do you feel you should be doing more for your relative?

21 Do you feel you could do a better job in caring for your relative?

Variance (%)

8.83