Table 4 Reliability of the Advance Care Planning Questionnaire
From: The development and validation of the advance care planning questionnaire in Malaysia
Original domain (no. of items) | New domains (no. of items) | Item | Cronbach alpha | Corrected item total correlation | Cronbach alpha if item deleted | Cohen’s kappa* (n = 131) |
|---|---|---|---|---|---|---|
Feelings regarding advance care planning (5) (n = 230) | Feelings regarding advance care planning (5) | Felt better to have expressed wishes in advance if I had a heart attack or on a breathing machine | 0.915 | 0.935 | 0.971 | 0.880 |
Felt better to have expressed wishes in advance if I had severe dementia | 0.911 | 0.975 | 0.814 | |||
Felt better to have expressed wishes in advance if I had a stroke | 0.955 | 0.968 | 0.860 | |||
Felt better to have expressed wishes in advance if I had cancer | 0.925 | 0.973 | 0.822 | |||
Felt better to have expressed wishes in advance if I had a road accident or in a coma | 0.939 | 0.971 | 0.814 | |||
Justifications for advance care planning (7) (n = 179) | Justifications for advance care planning (4) | I hope to not burden my family with my medical treatment preferences | 0.769 | 0.606 | 0.699 | 0.864 |
I want to be able to make my own decision | 0.594 | 0.702 | 0.892 | |||
I am aware that I could possibly lose my decision making power as a result of becoming seriously ill or injured | 0.582 | 0.708 | 0.769 | |||
There may be differences in opinions between my family members | 0.514 | 0.746 | 0.802 | |||
Justifications for not having advance care planning (10) (n = 55) | Fate and religion (4) | I believed that planning for my death would mean there is no hope for me | 0.802 | 0.696 | 0.713 | 0.947 |
I believed that the discussion of the topic of death was seen as “unlucky” and I tried to avoid discussing about it | 0.678 | 0.720 | 0.741 | |||
I will take it as it comes, as I have no control over my death | 0.572 | 0.774 | 0.742 | |||
I felt that it was best to leave to fate or to God | 0.540 | 0.788 | 0.888 | |||
Avoid thinking about death (3) | I do not want to think I will die or lose my memory | 0.637 | 0.597 | 0.320 | 0.770 | |
I cannot imagine myself in such a situation | 0.508 | 0.478 | 0.738 | |||
I am currently healthy and there is no need to consider such decisions | 0.287 | 0.791 | 0.939 |