Helicobacter pylori resistance to antibiotics according to country of residence in Europe in adult patients
| European region | No. of resistant strains/No. tested | % Resistance | 95% CI |
| Clarithromycin | |||
| Northern | 31/401 | 7.7 | 5.4 to 10.7 |
| Western/Central | 136/725 | 18.7 | 16.1 to 21.7 |
| Southern | 165/767 | 21.5 | 19.9 to 25.5 |
| Levofloxacin | |||
| Northern | 31/401 | 7.7 | 5.4 to 10.7 |
| Western/Central | 135/725 | 18.6 | 15.9 to 21.6 |
| Southern | 101/767 | 13.1 | 11.0 to 15.8 |
| Metronidazole | |||
| Northern | 115/401 | 28.6 | 24.3 to 33.1 |
| Western/Central | 318/725 | 43.8 | 40.2 to 47.3 |
| Southern | 228/767 | 29.7 | 26.5 to 32.9 |
Northern Europe: Finland, Ireland, Lithuania, Norway, The Netherlands, UK.
Western/Central Europe: Austria, Belgium, France, Germany, Hungary, Poland.
Southern Europe: Croatia, Greece, Italy, Portugal, Slovenia, Spain.