Table 2.

Demographic characteristics of Japanese patients enrolled in study 2

		Helicobacter pylori positivity	Helicobacter pylori negativity	Total	P-value
n		99	112	211
Sex	Male	36.4%	51.8%	44.5%	0.02
Age	(Mean ± SD)	58.0 ± 1.8	40.5 ± 1.9	49.8 ± 1.4	<0.01
IgE	Negative	67 (67.7%)	36 (32.1%)	103 (48.8%)	<0.01
	Positive	32 (33.3%)	76 (67.9%)	108 (51.2%)
IgE level	Mild	16 (16.1%)	52 (46.4%)	68 (32.2%)	0.18
	Moderate	9 (9.1%)	12 (10.7%)	21 (10.0%)
	Severe	7 (7.0%)	12 (10.7%)	19 (9.7%)
Allergen	Pollen	32 (32.2%)	76 (67.9%)	108 (51.2%)	<0.01
	Mites	19 (19.2%)	41 (36.6%)	60 (28.4%)	<0.01
	House dust	16 (16.2%)	44 (39.3%)	60 (28.4%)	<0.01

P-values analyze demographic data between Helicobacter pylori-positive patients and Helicobacter pylori-negative patients. IgE, immunoglobulin E.