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Table 1 Demographic data for both patient groups: acute kidney injury (AKI) and non-acute kidney injury (non-AKI)

From: Serum cystatin is a useful marker for the diagnosis of acute kidney injury in critically ill children: prospective cohort study

Variables
No. of patients
AKI
32 patients
Non-AKI
30 patients
P-value
Age (months) 18 (8–42) 20.5 (6–54) 0.05
Sex
 Male 19 (59.3 %) 16 (53.3 %) 0.79
 Female 13 (40.7 %) 14 (46.7 %)
RIFLE stage for AKI group
 RIFLE 18 (56.3 %)   
 Injury 10 (31.25 %)   
 Failure 4 (12.5 %)   
Possible etiologies for AKI group (N = 32)
 Hypoxia/ischemia/ATN 13 (40.6 %)   
 Sepsis 16 (50.0 %)   
 Glomerulonephritis 2 (6.3 %)   
 Urinary tract obstruction 1 (3.1 %)   
 Nephrology consultation 13 (40.6 %)   
 Diuretic use 23 (71.8 %)   
 Renal replacement 1 (3.1 %)   
Basal GFR (ml/min/1.73 m2) (median-interquartile range) 80 (66–96) 109 (79–124) 0.08
Basal creatinine (μmol/l) (median-interquartile range) 41.5 (31–51.2) 29.4 (24–34,4) 0.05
Basal cystatin C (mg/l) (median-interquartile range) 0.901.7 (0.802.5–1.502) 0.611.6 (0.549–0.672) 0.05
Mortality 4 (12.5 %) 1 (3.3 %) 0.114
Creatinine on discharge (μmol/l) (median-interquartile range) 28.0 (23–35) 28.72 (24–34.2) 0.832
GFR at discharge (ml/min/1.73 m2) (median-interquartile range) 102.5 (82.5–114.5) 104.7 (84–120) 0.535