Table 1. General patient characteristics and the most important laboratory values.

		mean ± SD
General characteristics	Age (years)	11.2±4.31
		median (IQR)
	Weight (kg)	37.5 (26-56.5)
	Height (cm)	147 (126.75-166)
	BMI (kg/m2)	17.72 (15.51-20.5)
		mean ± SD
Laboratory values	Cystatin C (mg/L)	0.87±0.13
	Urea - serum (mmol/L)	4.1±0.86
	BUN (mg/dL)	11.46±2.41
		median (IQR)
	Creatinine - serum (µmol/L)     Creatinine - serum (mg/dL)	41.5 (36.5-52)     0.5 (0.4-0.59)
SD – standard deviation, IQR – interquartile range, BMI – body mass index     BUN – blood urea nitrogen