Table 2.
Unadjusted in-hospital outcomes stratified by age groups
| Age groups | ||||
|---|---|---|---|---|
| ≤79 years (n = 54 080) | 80–89 years (n = 27 740) | ≥90 years (n = 2320) | P | |
| Clinical outcomes | ||||
| Mortality or stroke | 400 (0.7) | 320 (1.2) | 25 (1.1) | 0.02 |
| Mortality | 70 (0.1) | 60 (0.2) | <11 (<0.5)a | 0.40 |
| Stroke | 340 (0.6) | 260 (0.9) | 20 (0.9) | 0.08 |
| Cardiac tamponade | 340 (0.6) | 190 (0.7) | 25 (1.1) | 0.45 |
| Acute kidney injury | 1285 (2.4) | 695 (2.5) | 80 (3.4) | 0.31 |
| Major bleeding | 3140 (5.8) | 1875 (6.8) | 165 (7.1) | 0.03 |
| Blood transfusion | 760 (1.4) | 505 (1.8) | 55 (2.4) | 0.04 |
| Vascular complications | 535 (1.0) | 410 (1.5) | 37 (1.6) | 0.01 |
| Any complicationb | 5005 (9.3) | 3015 (10.9) | 285 (12.3) | <0.01 |
| Discharge disposition | ||||
| Routine | 50 840 (94.1) | 25 170 (90.7) | 1995 (86.0) | <0.01 |
| Transfer to short-term hospital | 30 (0.1) | 35 (0.1) | <11 (<0.5)a | |
| Transfer to SNF or ICF | 1100 (2.0) | 755 (2.7) | 105 (4.5) | |
| Home healthcare | 1985 (3.7) | 1715 (6.2) | 215 (9.3) | |
| Resource utilization | ||||
| LOS (days) | 1 (1–1) | 1 (1–1) | 1 (1–1) | 0.40 |
| Hospital cost ($) | 28 988 (20 620–42 283) | 28 911 (21 120–43 507) | 30 255 (21 655–43 491) | 0.10 |
Data are presented as median (IQR) or n (%). The International Classification of Diseases, Tenth Revision (ICD-10), codes corresponding to each of the in-hospital outcomes were identified with the same process used to identify comorbidity codes (see Supplementary material online, Table S1).
ICF, intermediate care facility; IQR, interquartile range; LOS, length of stay; SNF, skilled nursing facility.
aCell counts < 11 are not reportable per HCUP guidelines.
bDefined as a composite of in-hospital mortality, stroke, cardiac tamponade, acute kidney injury, major bleeding, blood transfusion, or vascular complications.