Table 3 Reliability (internal consistency and test-retest reliability) of the ACPES
From: Validation of the advance care planning engagement survey in Singapore
Cronbach’s alpha | ICC (95% CI) | |
|---|---|---|
15 items Self-efficacy Readiness | 0.945 0.915 0.956 | 0.933 (0.875–0.965) |
9 items | 0.915 | 0.938 (0.884–0.967) |
4 items | 0.912 | 0.865 (0.756–0.928) |