Table 2.

Comparison of AIH patients with elevated serum IgG4 with those with normal IgG4 levels.

Characteristics	AIH with elevated serum IgG4	AIH with normal serum IgG4	P value
	19	20	—
Male	10 (52.6%)	4 (20.0%)	0.048
Age (≤65 yr)	14 (73.7%)	15 (75.0%)	1.000
IgE elevated	8 (42.1%)	2 (10.0%)	0.031
C3 decreased	12 (63.2%)	9 (45.0%)	0.341
C4 decreased	14 (73.7%)	3 (15.0%)	<0.001
ALT ≥ 10 times ULN	8 (42.1%)	2 (10.0%)	0.031
AST ≥ 10 times ULN	8 (42.1%)	2 (10.0%)	0.031
Allergic disease	8 (42.1%)	2 (10.0%)	0.031
Constipation	8 (42.1%)	2 (10.0%)	0.031