Logistic regression comparing any ACP documentation (reference; n=756) versus no ACP documentation (n=479)
| Comparison | Crude OR (95% CI) | Adjusted OR (95% CI) | P value | |
| Gender | Male | Ref | 0.094 | |
| Female | 1.41 (1.06 to 1.85) | 1.30 (0.95 to 1.79) | ||
| Age (years) | Per year | 1.03 (1.02 to 1.05) | 1.03 (1.01 to 1.05) | 0.009 |
| Multimorbidity | One | Ref | 0.897 | |
| Multiple | 1.18 (0.61 to 2.27) | 1.05 (0.48 to 2.27) | ||
| Relationship status | Married/living with partner | Ref | 0.297 | |
| Other | 0.99 (0.75 to 1.32) | 0.85 (0.62 to 1.16) | ||
| Country of birth | Australia | Ref | 0.019 | |
| Other | 0.67 (0.50 to 0.90) | 0.68 (0.50 to 0.94) | ||
| Setting | RACF | Ref | <0.001 | |
| Other | 0.12 (0.06 to 0.23) | 0.15 (0.06 to 0.35) | ||
| Estimated functional status | No or some disability | 0.68 (0.34 to 1.39) | 1.14 (0.50 to 2.56) | 0.630 |
| Moderate disability | 0.77 (0.52 to 1.12) | 0.83 (0.55 to 1.27) | ||
| Severe disability | 1.04 (0.76 to 1.43) | 1.06 (0.75 to 1.49) | ||
| Very severe disability | Ref | |||
| Palliative care | Yes | Ref | 0.174 | |
| No | 0.66 (0.39 to 1.10) | 0.68 (0.38 to 1.19) | ||
| Jurisdiction | Common law state for ACD preferences | Ref | 0.203 | |
| Legislative state for ACD preferences | 0.57 (0.29 to 1.12) | 0.63 (0.31 to 1.28) | ||
| ACP programme | Yes | Ref | 0.177 | |
| No | 0.34 (0.15 to 0.81) | 0.52 (0.20 to 1.35) | ||
| ACP training | Yes | Ref | 0.655 | |
| No | 1.10 (0.53 to 2.27) | 1.19 (0.55 to 2.56) | ||
| Any ACP policy or guideline | Yes | Ref | 0.579 | |
| No | 0.94 (0.48 to 1.89) | 1.22 (0.61 to 2.38) | ||
| Any funded ACP support | Yes | Ref | 0.545 | |
| No | 1.43 (0.75 to 2.70) | 1.25 (0.61 to 2.56) |
ACD, advance care directive; ACP, advance care planning; RACF, residential aged care facility.