| Characteristic | Conservative strategy (N = 67) | Liberal strategy (N = 69) | P Value |
| Age, mean (yr) | 72 ± 11 | 69 ± 14 | 0.29 |
| Age, median (IQR) | 73 (66 - 80) | 70 (57 - 83) | 0.29 |
| Gender, n (%) |
|
| 0.07 |
| Male | 41 (61.19) | 38 (55.07) |
|
| Female | 26 (38.81) | 31 (44.93) |
|
| Race, n (%) |
|
| 0.48 |
| Hispanic | 25 (37.31) | 34 (49.28) |
|
| Caucasian | 25 (37.31) | 19 (27.54) |
|
| African American | 15 (22.39) | 15 (21.74) |
|
| Asian | 2 (2.99) | 1 (1.45) |
|
| Preexisting comorbidities, n (%) |
|
|
|
| CHF | 9 (13.43) | 11 (15.94) | 0.18 |
| CAD | 22 (32.84) | 15 (21.74) | 0.05 |
| Diabetes | 27 (40.30) | 32 (46.37) | 0.11 |
| Hypertension | 54 (80.60) | 57 (82.61) | 0.17 |
| CKD | 7 (10.45) | 10 (14.49) | 0.16 |
| Immunocompromised | 10 (14.93) | 9 (13.04) | 0.19 |
| Medical ICU admission, n (%) | 50 (74.63) | 34 (49.28) | 0.002 |
| Vasopressor requirement | 48 (71.64) | 30 (43.48) | <0.001 |
| Mechanical ventilation | 45 (67.16) | 27 (39.13) | 0.001 |
| AKI, n (%) |
|
| 0.001 |
| Stage 1 | 10 (14.93) | 28 (40.58) |
|
| Stage 2 | 17 (25.37) | 18 (26.09) |
|
| Stage 3 | 40 (59.70) | 23 (33.33) |
|
| Peak creatinine levels, mean ± SD |
|
| <0.001 |
| Stage 1 | 1.73 ± 0.31 | 1.70 ± 0.50 | 0.84 |
| Stage 2 | 3.08 ± 0.12 | 2.82 ± 0.53 | 0.12 |
| Stage 3 | 7.31 ± 2.70 | 5.97 ± 2.53 | 0.05 |
| Urinalysis, n (%) |
|
|
|
| Proteinuria | 53 (79.10) | 56 (81.16) | 0.76 |
| Hematuria | 30 (44.78) | 22 (31.88) | 0.12 |