Table 4.

Results of logistic regression analysis assessing relation between infection of parents and likelihood of children being positive for H pylori adjusted for children’s age, sex, and family social environment

Variable	Odds ratio	95% CI	P value
1 parent infected v no parent	1.47	0.81 to 2.70	0.27
2 parents infected v no parent	2.48	1.35 to 4.52	0.016
Blue collar workers and farmers v white collar workers	2.02	1.16 to 3.50	0.02
Age (continuous variable)	1.06	1.02 to 1.09	0.001
Sex (male reference category)	0.76	0.53 to 1.09	0.18