The antibiotics and their groups.
| ATC code | Antibiotic name | Antibiotic group |
| J01CA04 | Amoxicillin | Respiratory tract infections |
| J01CR02 | Amoxicillin and beta-lactamase inhibitor | |
| J01CE02 | Phenoxymethylpenicillin | |
| J01AA02 | Doxycycline | |
| J01FA10 | Azithromycin | |
| J01FA09 | Clarithromycin | |
| J01FA06 | Roxithromycin | |
| J01FA15 | Telithromycin | |
| J01FA01 | Erythromycin | |
| J01EA01 | Trimethoprim | Urinary tract infections |
| J01XE01 | Nitrofurantoin | |
| J01CA08 | Pivmecillinam | |
| J01DB01 | Cefalexin | Other |
| J01EE01 | Sulfamethoxazole and trimethoprim | |
| J01AA07 | Tetracycline | |
| J01MA02 | Ciprofloxacin | |
| J01FF01 | Clindamycin | |
| J01AA04 | Lymecycline | |
| J01DC02 | Cefuroxime | |
| J01EE02 | Sulfadiazine and trimethoprim | |
| J01MA12 | Levofloxacin | |
| J01MA14 | Moxifloxacin | |
| J01XC01 | Fusidic acid | |
| J01X×05 | Methenamine | |
| J01MA01 | Cfloxacin | |
| J01CF05 | Flucloxacillin | |
| J01DC04 | Cefaclor | |
| J01CE10 | Benzathine phenoxymethylpenicillin | |
| J01DD04 | Ceftriaxone | |
| J01CE08 | Benzathine benzylpenicillin | |
| J01CE01 | Benzylpenicillin | |
| J01CE09 | Procaine benzylpenicillin | |
| J01X×01 | Osfomycin | |
| J01DE01 | Cefepime | |
| J01X×08 | Linezolid | |
| J01MA06 | Norfloxacin | |
| J01DH02 | Meropenem | |
| J01DD02 | Ceftazidime | |
| J01GB01 | Tobramycin | |
| J01CA01 | Ampicillin |
All prescriptions for antibacterial agents for systemic use (ATC code J01) were considered, and the antibiotics were grouped to denote if they are mainly used in treatment of respiratory tract infections, urinary tract infections, or other infections. The study focused on the change in usage of respiratory tract infection related antibiotics compared with other antibiotics, while UTI-related antibiotics acted as a reference group.
ATC, Anatomical Therapeutic Chemical Classification System.