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Table 1 Drug groups included in the study.

From: Validity of registration of ICD codes and prescriptions in a research database in Swedish primary care: a cross-sectional study in Skaraborg primary care database

Drug groups

ATC codes

Long-acting nitrates

C01DA08, C01DA14

Loop diuretics

C03C

Potassium-sparing diuretics

C03D

Diuretic combinations

C03E

Thiazides

C03A, C03B

Beta blockers

C07

Calcium channel blockers

C08

ACE-inhibitors

C09A, C09B

Angiotensin receptor blockers

C09C, C09D

Statins

C10AA

Fibrates

C10AB

Resins

C10AC

  1. Drug groups with ATC codes (Anatomic Therapeutic Chemical classification system).