Table 1.
Baseline Patient Characteristics
| Characteristic | Negative (n = 490) | Prevented (n = 147) | P | Positive (n = 131) |
|---|---|---|---|---|
| Age, mean (SD), y | 57.7 (17.4) | 60.1 (19.5) | .177 | 60.4 (15.7) |
| Gender, male | 241 (49.2) | 70 (47.6) | .778 | 69 (52.7) |
| Charlson comorbidity index, median (IQR)a | 0 (0–3) | 0 (0–4) | .357 | 0 (0–4) |
| 0 | 264 (56.2) | 74 (52.1) | 71 (54.2) | |
| 1–2 | 72 (15.3) | 21 (14.8) | 18 (13.7) | |
| 3–4 | 49 (10.4) | 20 (14.1) | 14 (10.7) | |
| ≥5 | 85 (18.1) | 27 (19.0) | 28 (21.3) | |
| Race | .309 | |||
| White | 373 (76.1) | 114 (77.6) | 103 (78.6) | |
| Black | 102 (20.8) | 32 (21.8) | 25 (19.1) | |
| Asian | 4 (0.8) | 1 (0.7) | 0 (0.0) | |
| Other | 11 (2.2) | 0 (0) | 3 (2.3) | |
| Serum creatinine, median (IQR),b mg/dL | 1.0 (0.7–1.7) | 1.0 (0.7–1.4) | .202 | 1.0 (0.7–1.7) |
| Vasopressorsc | 34 (6.9) | 7 (4.8) | .444 | |
| WBC, mean (SD),d 109/L | 11.7 (9.5) | 10.1 (6.9) | .031 | 11.9 (8.0) |
| ICU | 144 (29.4) | 34 (23.1) | .144 | 37 (28.2) |
Data are presented as No. (%) unless otherwise indicated. P values are for negative/prevented comparisons.
Abbreviations: ICU, intensive care unit; IQR, interquartile range; WBC, white blood cell count.
aCharlson comorbidity index data not available for 25 cases (20 negative, 5 prevented).
bBaseline creatinine data not available for 11 patients (1 negative, 10 prevented).
cAt time of test trigger.
dBaseline white blood cell count data not available for 16 patients (8 negative, 8 prevented, 2 positive).