Table 2. Risk factors for Helicobacter pylori eradication treatment failure

	Univariable logistic regression			Multivariable logistic regression
Characteristic	OR	95% CI	P-value	OR	95% CI	P-value
Female	1.151	0.935 to 1.416	0.184
Age, increment per year	0.986	0.980 to 0.992	<0.001	0.986	0.979 to 0.992	<0.001
Diabetes mellitus	0.940	0.639 to 1.384	0.756
Hypertension	0.994	0.763 to 1.296	0.967
Duration eradication therapy >7 days	0.613	0.427 to 0.880	0.008	0.626	0.435 to 0.901	0.012
Acid inhibition used in year before eradication therapy	0.874	0.715 to 1.068	0.187
β-lactams used in year before eradication therapy	1.504	1.158 to 1.952	0.002	1.359	1.029 to 1.796	0.031
Tetracyclines used in year before eradication therapy	1.219	0.830 to 1.790	0.313
Macrolides used in year before eradication therapy	2.695	1.932 to 3.758	<0.001	2.758	1.946 to 3.908	<0.001