Table 2.
Patients’ characteristics by intensive care unit (ICU) admission. Values are numbers (percentages) unless stated otherwise
| Characteristics | ICU | Non-ICU |
|---|---|---|
| Patients | 75 227 (68.8) | 34 148 (31.2) |
| Mean (SD) age, years | 75.6 (7.6) | 77.1 (8.3) |
| Age group, years: | ||
| 65-74 | 38 598 (51.3) | 15 388 (45.1) |
| 75-84 | 24 485 (32.6) | 10 505 (30.8) |
| ≥85 | 12 144 (16.1) | 8255 (24.2) |
| Sex: | ||
| Male | 45 352 (60.3) | 18 692 (54.7) |
| Female | 29 875 (39.7) | 15 456 (45.3) |
| Race/ethnicity: | ||
| White | 65 279 (86.8) | 29 786 (87.2) |
| Black | 5279 (7.0) | 2268 (6.6) |
| Other | 4669 (6.2) | 2094 (6.1) |
| Urbanicity: | ||
| Large central metropolitan | 17 146 (22.8) | 8107 (23.7) |
| Large suburban metropolitan | 17 217 (22.9) | 7759 (22.7) |
| Medium metropolitan | 16 498 (21.9) | 7756 (22.7) |
| Small metropolitan | 8514 (11.3) | 4089 (12.0) |
| Micropolitan | 8991 (12.0) | 3629 (10.6) |
| Non-core | 6861 (9.1) | 2808 (8.2) |
| Median household income by ZIP code, $: | ||
| <40 000 | 18 057 (24.0) | 7524 (22.0) |
| 40 000-100 000 | 53 260 (70.8) | 24 800 (72.6) |
| >100 000 | 3910 (5.2) | 1824 (5.3) |
| Mean (SD) Elixhauser comorbidities count | 3.0 (1.9) | 2.9 (1.9) |
| Hospital diagnoses: | ||
| Respiratory failure | 15 001 (19.9) | 2811 (8.2) |
| Shock | 15 413 (20.5) | 2197 (6.4) |
| Cardiac arrest | 16 758 (22.3) | 4326 (12.7) |
| Procedures performed during hospital admission: | ||
| Percutaneous coronary intervention | 65 970 (87.7) | 26 057 (76.3) |
| Coronary artery bypass grafting | 6013 (8.0) | 845 (2.5) |
| Thrombolytics | 1555 (2.1) | 519 (1.5) |
| Mechanical ventilation | 13 767 (18.3) | 1775 (5.2) |
| Renal replacement therapy | 993 (1.3) | 126 (0.4) |
| Mechanical cardiac support* | 10 075 (13.4) | 1041 (3.1) |
| Targeted temperature management | 614 (0.8) | 38 (0.1) |
| Angus organ failure score: | ||
| 0 | 41 742 (55.5) | 24 219 (70.9) |
| ≥1 | 33 485 (44.5) | 9929 (29.1) |
| Billing encounter for palliative care | 4136 (5.5) | 1863 (5.5) |
| Median (interquartile range) length of index hospital admission, days | 3 (2-6) | 3 (2-4) |
| Discharge destination of index hospital admission: | ||
| Home | 52 124 (69.3) | 25 604 (75.0) |
| Rehabilitation or nursing facility | 8567 (11.4) | 3714 (10.9) |
| Other | 3789 (5.0) | 1987 (5.8) |
| In-hospital mortality | 10 747 (14.3) | 2843 (8.3) |
*
Percutaneous ventricular assist device or intra-aortic balloon pump.