TABLE 2.

Characteristics of patients stratified by serologic responses to H. pylori HspA

Characteristic	HspA status		P value	Odds ratio (95% CIa)
	Seropositive (n = 54)	Seronegative (n = 100)
Mean ± SE age (yr)b	55.2 ± 2.2	50.7 ± 1.8	0.26	NAc
% Male sex	57.4	63.0	0.61	0.8 (0.4–1.6)
% Smoker	57.4	64.0	0.53	0.8 (0.4–1.6)
% Alcohol use	18.5	14.0	0.61	1.4 (0.5–3.7)
% Anti-CagA IgG positive	59.3	64.0	0.69	0.8 (0.4–1.7)

^aCI, confidence interval. 

^bStandard error of mean, analysis by Student’s t test. 

^cNA, not applicable.