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Table 1 ATC-codes for prescription drugs used to identify individuals receiving triple treatment

From: Perceived stress as a risk factor for peptic ulcers: a register-based cohort study

Drug group

Generic name

ATC-code

Proton Pump Inhibitors

Omeprazole

A02BC01

Pantoprazole

A02BC02

Lansoprazole

A02BC03

Rabeprazole

A02BC04

Ensomeprazole

A02BC05

H2-receptor antagonists

Cimetidine

A02BA01

Ranitidine

A02BA02

Famotidine

A02BA03

Nizatidine

A02BA04

Niperotidine

A02BA05

Roxatidine

A02BA06

Ranitidine Bismuth Citrate

A02BA07

Lafutidine

A02BA08

Macrolides

Erythromycin

J01FA01

Spiramycin

J01FA02

Midecamycin

J01FA03

Oleandomycin

J01FA05

Roxithromycin

J01FA06

Josamycin

J01FA07

Troleandomycin

J01FA08

Clarithromycin

J01FA09

Azithromycin

J01FA10

Miocamycin

J01FA11

Rokitamycin

J01FA12

Dirithromycin

J01FA13

Flurithromycin

J01FA14

Telithromycin

J01FA15

Other Antibiotics

Amoxicillin

J01CA04

Metronidazole

J01XD01

Metronidazole

G01AF01

Metronidazole

P01AB01

Metronidazole

A01AB17

Metronidazole

D06BX01

Tinidazole

P01AB02

Tetracycline

D06AA04

Tetracycline

S01AA09

Tetracycline

S02AA08

Tetracycline

S03AA02

Tetracycline

J01AA07

Tetracycline

A01AB13

  1. To be classified as triple treatment, one drug from either the proton pump inhibitor (PPI) or H2-receptor antagonist group combined with one macrolide and one other antibiotic. Both antibiotics had to be redeemed on the same date, whereas the PPI or H2-receptor antagonist could be redeemed within 60 days preceding antibiotics. Individuals redeeming prescriptions for PPIs or H2-receptor antagonists combined with either amoxicillin and metronidazole or tetracycline and metronidazole were also classified as triple treated