TABLE 3.

Results of multivariate analysis on variables associated with failure of eradication treatment of H. pylori infection^a

Variable	Global sample (n = 156)		Clarithromycin-susceptible strainsb(n = 140)
	OR	95% CI	OR	95% CI
cagA-lacking strain	2.2	1.1–4.7	2.6	1.1–4.7
Double dose of pantoprazole	0.3	0.2–0.7	0.3	0.1–0.7
Smoker	3.1	1.3–7.0	4.2	1.6–10.9

^aSignificance for each model, P < 0.001. 

^bSusceptibility defined as MIC of <1 mg/liter.