Table 1.
Hospital and Patient Characteristics for the Derivation, Validation, and Total Population
| Derivation Cohort (n = 162,088) | Validation Cohort (n = 107,911) | Total (n = 269,999) | |
|---|---|---|---|
| Age, mean (SD), yr | 60 (20) | 60 (20) | 60 (20) |
| Female sex, n (%) | 97,978 (60) | 64,303 (60) | 162,281 (60) |
| Race | |||
| Black, n (%) | 27,870 (17) | 21,800 (20) | 49,670 (18) |
| White, n (%) | 76,237 (47) | 64,193 (59) | 140,430 (52) |
| Other/unknown, n (%) | 57,981 (36) | 21,918 (20) | 79,899 (30) |
| Cardiac arrests, n (rate per 1,000 admissions) | 264 (1.6) | 160 (1.5) | 424 (1.6) |
| ICU transfers, n (rate per 1,000 admissions) | 8,143 (50) | 5,045 (47) | 13,188 (49) |
| Deaths, n (rate per 1,000 admissions) | 1,902 (12) | 938 (9) | 2,840 (11) |
Definition of abbreviation: ICU = intensive care unit.