Table 1. Demographic and clinical characteristics of the study subjects.

	IgAV (n = 30)	Healthy controls (n = 15)
Age, year	6 (3–14)	6 (3–13)
Female/male	16/14	7/8
WBC, 109/l	9.82 (3.97–18.23)*	7.1 (5.13–9.11)
Lymphocytes, 106/l	3.36 (1.6–5.43)	3.61 (1.36–4.28)
Platelet, g/l	367 (179–471)*	278 (167–389)
Serum IgA, g/l	2.25 (0.97–5.83)*	1.56 (0.95–3.89)
Serum IgG, g/l	10.4 (0.98–17.1)	10.1 (1.15–16.02)
Serum IgM, g/l	1.23 (0.67–3.12)	1.02 (0.69–3.43)
Serum IgE, g/l	51.2 (23.9–637.0)*	32.1 (19.3–80.4)
Serum C3, g/l	1.31 (0.82–1.73)	1.42 (0.95–1.61)
Serum C4, g/l	0.41 (0.19–0.47)*	0.33 (0.15–0.51)
Serum CRP (mg/l)	7.53 (1.28–70.12)*	3.1 (0.82–4.2)

CRP, C-reactive protein; WBC, white blood cell.

*P < 0.05 vs. healthy controls (values before treatments)