Table 2.
Baseline characteristics and age-adjusted Charlson comorbidity (AACC) index
| Baseline characteristics | Acute care patients (n = 15 000) | Cardiac arrest patients (n = 145) | P |
|---|---|---|---|
| Male sex, No. (%) | 6099 (40) | 83 (57) | <.001a |
| Length of stay, mean, d | 5.7 | 24.4 | <.001b |
| Age, mean, y | 55 | 67 | <.001b |
| AACC index, mean (range, 0–37) | 2.25 | 8.7 | <.001b |
| AACC index | No. (%) of patients | ||
| Acute care patients (n = 15 000) | Cardiac arrest patients (n = 145) | ||
| 0 | 5799 (38.6) | 5 (3.4) | |
| 1 | 2093 (14.0) | 4 (2.8) | |
| 2 | 2127 (14.1) | 5 (3.4) | |
| 3 | 1886 (12.6) | 5 (3.4) | |
| 4 | 1338 (9.0) | 11 (7.6) | |
| 5 | 498 (3.3) | 13 (9.0) | |
| ≥6 | 1259 (8.4) | 102 (70.3) | |
a
Z test.
b
t test (2-tailed).