Table 4.

Helicobacter pylori resistance against different antibiotics tested in naïve and non-naïve patients.

Resistance	Naïve N (%)	Non-Naïve N (%)	p-Value
No resistance	1365 (48%)	93 (16%)	0.001
Clarithromycin	701 (25%)	380 (66%)	0.01
Metronidazole	852 (30%)	309 (54%)	0.02
Levofloxacin	561 (20%)	164 (28%)	0.03
Amoxicillin	11 (0.4%)	4 (0.7%)	0.3
Tetracycline	5 (0.2%)	0 (0%)	0.4
Dual (C+M)	368 (13%)	248 (43%)	0.02
Triple (C+M+L)	172 (6%)	109 (19%)	0.01

N—number of patients analyzed; C—clarithromycin; M—metronidazole; L—levofloxacin.