Reliability analysis (n=40)
| Variable | % Agreement | Kappa (95% CI) | Kappa agreement | P value |
| ACP documentation by the person | 100 (5 documents) | 1.0 | Very good | <0.001 |
| Statutory ACD: preferences for care | 100 (0 documents) | 1.0 | Very good | <0.001 |
| Statutory ACD: SDM | 100 (4 documents) | 1.0 | Very good | <0.001 |
| Non-statutory ACP documentation | 100 (2 documents) | 1.0 | Very good | <0.001 |
| Documentation by a health professional | 97.1 (33 of 34 documents) | 0.804 (0.541 to 1.0) | Good | <0.001 |
| Documentation by someone else | 100 (1 document) | 1.0 | Very good | <0.001 |
ACD, advance care directive; ACP, advance care planning; SDM, substitute decision-maker.