Table 1.
Baseline characteristics in patients for whom urine creatinine clearance was unavailable (n = 179) and in patients for whom urine creatinine clearance was measured (n = 12)
| Patients without urine | Patients with urine | ||
|---|---|---|---|
| creatinine clearance (n = 179) | creatinine clearance (n = 12) | P-value | |
| Mean age (years) | 59.7 ± 16.9 | 59.3 ± 18.9 | 0.93 |
| Gender (% male) | 121/179 (67.6%) | 4/12 (33.3%) | 0.03 |
| Race | 0.16 | ||
| Caucasian | 153/179 (85.5%) | 9/12 (75%) | |
| African American | 13/179 (7.3%) | 1/12 (8.3%) | |
| Hispanics | 5/179 (2.8%) | 2/12 (16.7%) | |
| Asian | 5/179 (2.8%) | ||
| Other | 3/179 (1.6%) | ||
| Mean baseline weight (kg) at hospital admission | 81.9 ± 19.7 | 76.3 ± 15.1 | 0.33 |
| Mean body surface area (m/1.73 m2) | 1.96 ± 0.24 | 1.90 ± 0.22 | 0.38 |
| Diabetes (%) | 52/179 (29.1%) | 2/12 (16.7%) | 0.36 |
| Hypertension (%) | 97/179 (54.2%) | 6/12 (50%) | 0.78 |
| Chronic kidney disease (%) | 56/179 (31.3%) | 6/12 (50%) | 0.20 |
| APACHE III (at ICU admission) | 60.7 ± 27.1 | 43.8 ± 26.1 | 0.06 |
| Mean% fluid overload per body weight during study period | 6.7 ± 9.0% | 6.4 ± 10.4 | 0.92 |
| Urine output during study period (median and IQR) | 1512 (25%–75%; 99–2925) | 1700 (25%–75%; 580–2820) | 0.28 |
| On diuretics (ever) (%) | 165/179 (92.2%) | 12/12 (100%) | 0.61 |
| Dialysed after study enrolment | 109/179 (60.9%) | 8/12 (66.7%) | 0.47 |
Continuous variables are reported as mean ± standard deviation.
Categorical variables are reported as percentage.
APACHE, acute physiology and chronic health evaluation; ICU, intensive care unit.