Table 2.

Patients’ demographic characteristics

Characteristics	Median	Mean ± SD	Minimal Value	First Quartile	Third Quartile	Maximal Value
Age (yr)	13	12±4.1	3.9	9.1	15.9	18.5
Body weight (kg)	43	44±18	10	28	58	108
Height (cm)	153	149±22	98	132	167	194
BMI (kg/m2)	18	19±4.2	6	16	20	42
iGFR (ml/min per 1.73m2)	86	85±21	16	72	98	142
Serum creatinine (mg/dl)	0.69	0.77±0.38	0.27	0.57	0.88	3.89
cystatin C (mg/L)	0.89	0.99±0.33	0.54	0.76	1.12	2.36
BUN (mg/dl)	91	90±49	20	39	129	201

BMI, body mass index; iGFR, sinistrin clearance.