Table 2.
Patient characteristics (n = 75)
| Patient characteristics | Total (n = 75) | Stage 1 (N = 25) | Stage 2 (N = 25) | Stage 3 (N = 25) | P value |
|---|---|---|---|---|---|
| Age, mean years (SD) | 56 (19) | 62 (18) | 53 (21) | 52 (18) | 0.16 |
| Female, n (%) | 46 (61) | 14 (56) | 14 (56) | 18 (72) | 0.41 |
| Race, n (%) | 0.35 | ||||
| White | 36 (48) | 12 (48) | 11 (44) | 13 (52) | |
| Black | 36 (48) | 13 (52) | 13 (52) | 10 (40) | |
| Asian | 1 (1) | 0 (0) | 1 (4) | 0 (0) | |
| Other | 2 (3) | 0 (0) | 0 (0) | 2 (8) | |
| Diabetes, n (%) | 16 (21) | 5 (20) | 6 (24) | 5 (20) | 0.92 |
| Hypertension, n (%) | 33 (44) | 14 (56) | 11 (44) | 8 (32) | 0.23 |
| Chronic kidney disease, n (%) | 11 (15) | 5 (20) | 6 (24) | 0 (0) | 0.04 |
| Coronary artery disease, n (%) | 16 (21) | 5 (20) | 5 (20) | 6 (24) | 0.92 |
| Congestive heart failure, n (%) | 11 (15) | 2 (8) | 2 (8) | 7 (28) | 0.07 |
| Charlson comorbidity score, median (IQR) | 2 (1–4) | 2 (1–5) | 2 (2–4) | 2 (0–3) | 0.25 |
| Length of stay, median days (IQR) | 9 (6–16) | 6 (4–7) | 10 (8–16) | 15 (7–35) | <0.001 |
| Admission diagnosis categories | |||||
| Infectious | 16 (21) | 3 (12) | 5 (20) | 8 (32) | 0.22 |
| Circulatory | 15 (20) | 7 (28) | 5 (20) | 3 (12) | 0.37 |
| Respiratory | 11 (15) | 5 (20) | 3 (12) | 2 (12) | 0.65 |
| Malignancy | 10 (13) | 4 (16) | 4 (16) | 2 (8) | 0.63 |
| Digestive | 8 (11) | 2 (8) | 5 (20) | 1 (4) | 0.16 |
| Renal | 6 (8) | 3 (12) | 2 (8) | 1 (4) | 0.58 |
| Endocrine/metabolic | 2 (3) | 0 (0) | 0 (0) | 2 (8) | 0.13 |
| Other | 7 (9) | 1 (4) | 1 (4) | 5 (20) | 0.08 |
| Discharge Service, n (%) | 0.26 | ||||
| Medical | 34 (45) | 12 (48) | 13 (52) | 9 (36) | |
| Surgical | 26 (35) | 10 (40) | 5 (20) | 11 (44) | |
| Oncology | 13 (17) | 2 (8) | 7 (28) | 4 (16) | |
| Other | 2 (3) | 1 (4) | 0 (0) | 1 (4) | |
| ICU stay during hospitalization, n (%) | 23 (31) | 6 (24) | 5 (20) | 12 (48) | 0.067 |
| Nadir creatinine, mean (SD) (mg/dl)a | 1.01 (0.90) | 1.28 (1.25) | 1.00 (0.81) | 0.76 (0.32) | 0.12 |
| Discharge creatinine, mean (SD) (mg/dl) | 1.39 (1.09) | 1.45 (1.30) | 1.30 (1.14) | 1.42 (0.82) | 0.87 |
| Hospital-acquired AKI, n (%) | 46 (61) | 14 (56) | 14 (56) | 18 (72) | 0.41 |
| Nephrology Consultb, n (%) | 13 (20) | 1 (4) | 3 (15) | 9 (43) | 0.004 |
| 30 day hospital readmission, n (%) | 14 (19) | 7 (28) | 4 (16) | 3 (12) | 0.32 |
aNadir serum creatinine – lowest serum creatinine during hospital admission; Abbreviations: ICU- intensive care unit
bAssessed among 65 patients with consult information available in the electronic medical record