Table 2.
Correlation matrix for AOC and physical health covariates
| Covariate | Age (years) | CCI | ASA | AOC |
|---|---|---|---|---|
| Age (years) | – | 0.34 | 0.05 | −0.01 |
| CCI total | 0.34 | – | 0.46a | −0.23 |
| ASA status | 0.05 | 0.46a | – | 0.01 |
| AOC | −0.01 | −0.23 | 0.01 | – |
ASA status based on Spearman’s rho
ASA status American Society of Anesthesiologists (ASA) physical status classification (range 1–6; 1 = healthy to 6 = declared brain death), CCI Charlson comorbidity index ([32]; score range 0 to 33; maximum comorbidity=33), AOC area over the curve
a
Two-tailed correlation is significant at the 0.01 level