TABLE 2.

Relationships between H. pylori eradication failure and variables related to the host and the strains, in NUD patients (n = 156)^a

Variable	Total sample		Eradication failure		OR for failure	95% CI	Pb
	No.	%	No.	%
Treatment
o.d.	80	51.3	32	40.0	1.00
b.i.d.	76	48.7	15	19.7	0.37	0.18–0.76	0.007
BMI
Normal	109	69.9	36	33.0	1.00
Inferior to normal	20	12.8	6	30.0	0.87	0.31–2.45	0.791
Superior to normal	27	17.3	5	18.5	0.46	0.16–1.32	0.148
Susceptibility to clarithromycin
Susceptible	140	89.7	31	22.1	1.00
Resistant	16	10.3	16	100.0	NAd	NAd	NAd
cagA status of strain
cagA+	84	53.8	20	23.8	1.00
cagA-lacking	72	46.2	27	37.5	1.92	0.96–3.40	0.065
Ethnic origin of patient
Caucasian	134	86.5	38	28.4	1.00
Others	21	13.5	9	42.9	1.89	0.66–5.38	0.18
Smoking status
Nonsmoker	119	76.3	30	25.2	1.00
Smoker	37	23.9	17	45.9	2.52	1.16–5.45	0.018
Age (continuous variable)c					0.98	0.95–1.0	0.069

^aResults of univariate analysis. 

^bP not significant if >0.25 in univariate analysis. 

^cMean for total sample, 51.7 years; mean for eradication, failure, 48.5 years. 

^dNA, not applicable.