Table 1.

Demographics and baseline characteristics of the patients in the present study

Patients characteristic	Healthy subject (n = 27)	Type 1 AIP (n = 40)	Alcoholic chronic pancreatitis (n = 8)	Bronchial asthma (n = 10)	Atopic dermatitis (n = 10)
Gender (male/female)	16/11	29/11	6/2	6/4	8/2
Age (years, mean ± SE)	65.63 ± 10.43	65.03 ± 10.70	57.00 ± 3.82	51.70 ± 13.38*	49.00 ± 17.31*
Serum IgG4 levels (mg/dL, mean ± SE)	32.90 ± 4.15 (n = 13)	465.85 ± 67.08 (n = 40)*	48.30 ± 12.36 (n = 8)	37.43 ± 6.75 (n = 8)	124.00 ± 33.03 (n = 8)

There was no difference in gender distribution between type 1 AIP and healthy subjects. The mean ages of bronchial asthma patients and atopic dermatitis patients were lower than those of patients with type 1 AIP and healthy subjects (P < 0.05). However, ages of patients with type 1 AIP, ACP, and healthy subjects were not significantly different. The mean values of serum IgG4 levels in type 1 AIP patients were significantly higher than in other groups (P < 0.05)

NS no significant differences compared with healthy or other disease controls

* P < 0.05 significant differences compared with healthy controls