Table 1.
Characteristics of Study Participants
| Variable | All patients (n=7,978) |
|---|---|
| Age, y, median (IQR) | 41 (26–58) |
| Year, n (%) | |
| 2009 | 726 (9) |
| 2010 | 719 (9) |
| 2011 | 812 (10) |
| 2012 | 915 (11) |
| 2013 | 884 (11) |
| 2014 | 851 (11) |
| 2015 | 858 (11) |
| 2016 | 816 (10) |
| 2017 | 837 (10) |
| 2018* | 560 (7) |
| Male sex, n (%) | 5,774 (72) |
| Race/ethnicity, n (%) | |
| White | 4,176 (52) |
| Black | 1,324 (17) |
| Hispanic | 1,739 (22) |
| Asian | 133 (2) |
| Blunt mechanism of injury, n (%) | 6,766 (85) |
| Injury Severity Score, median (IQR) | 20 (13–29) |
| Arrival systolic blood pressure, mmHg, median (IQR) | 122 (101–142) |
| Arrival base deficit, mmol/L, median (IQR) | 4 (8–1) |
| Baseline creatinine, mg/dL, median (IQR) | |
| MDRD | 1.1 (1.0–1.2) |
| T-MDRD | 0.7 (0.6–0.8) |
| Admission creatinine | 1.1 (0.9–1.4) |
| First day nadir | 0.9 (0.7–1.2) |
| 30-day ICU free days, median (IQR) | 26 (17–28) |
| 30-day hospital free days, median (IQR) | 16 (4–23) |
| Length of stay, n (%) | |
| <1 week | 2,507 (31) |
| Discharged | 1,950 (78) |
| Mortality | 557 (22) |
| In-hospital mortality, n (%) | 825 (10) |
| Mortality < 1 week | 557 (68) |
*
Complete data through 10 months
MDRD, Modified Diet of Renal Diseases; TMDRD, Trauma Modified Diet of Renal Diseases