Table 1.

The demographic and clinical characteristics of subjects.

	IgAN patients (n = 25)	Controls (n = 25)	Controls (n = 8)	p-value
Gender, M/F ratio	1.5	1.08	1.7	ns
Age, years	10.6 ± 2.1	10.74 ± 2.5	10.25 ± 1.0	ns
Blood pressure systolic (mmHg)	103.7 ± 27.8		99.6 ± 16.2	ns
Blood pressure diastolic (mmHg)	69.1 ± 8.5		64.9 ± 7.9	ns
Isolated hematuria	12 (48%)
Non-nephrotic syndrome level proteinuria	13 (52%)
serum Scr (μmol/L)	59.12 ± 27.5		48.9 ± 3.26	ns
serum BUN (mmol/L)	5.56 ± 1.99		4.49 ± 1.18	ns
24-h-urine proteins(g)	0.65 ± 0.71
Urinary microalbumin (mg/dL)	118 ± 131.2
Urine erythrocytes/HP	288.3 ± 347.3
Lee's classification (I + II)	19 (76%)
Lee's classification(III + IV)	6 (24%)

Those 25 healthy control children were recruited from the Center of Physical Examination of our hospital. Those eight control non-IgAN patients underwent unilateral partial nephrectomy due to trauma or tumor.