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Reduced effectiveness among β-lactam antibiotics: a population-based cohort study in primary care in Italy
- Source :
- Journal of Antimicrobial Chemotherapy. 76:2186-2194
- Publication Year :
- 2021
- Publisher :
- Oxford University Press (OUP), 2021.
-
Abstract
- Background There are few data comparing the relative effectiveness of the individual β-lactams. Objectives To quantify the reduced effectiveness, defined as switching to a different antibiotic being prescribed for the same indication, among new users of β-lactam antibiotics in primary care. Methods A retrospective cohort study was conducted using the Health Search Database, an Italian primary care data source. Patients newly prescribed with β-lactams for a specific indication between 1 January 2013 and 31 December 2017 were identified. A switch to a different antibiotic for the same indication occurring during a 30day follow-up was the study outcome. Cox regression was adopted to assess the risk of switching between the different β-lactams. Results Among 178 256 patients newly treated with β-lactam antibiotics, 1172 (0.65%) switched to a different antibiotic. Amoxicillin/clavulanate (co-amoxiclav: n = 104 891) and amoxicillin (n = 21 699) were the most frequently prescribed β-lactams. The other antibiotics showed significantly higher risk of switching when compared with co-amoxiclav for lower respiratory tract [e.g. ceftriaxone, hazard ratio (HR): 1.6, 95% CI: 1.2–2.0], dental [e.g. amoxicillin, HR: 4.2, 95% CI: 2.9–5.9], and middle ear infections [e.g. amoxicillin, HR: 1.8, 95% CI: 1.1–2.7]. The same results were gathered when parenteral formulations were excluded. Conclusions The prevalence of reduced effectiveness of newly prescribed β-lactam antibiotics was lower than 1%. Specifically, the rate of switch to another antibiotic, when it was prescribed to treat low respiratory tract, dental, and middle ear infections, was lower among users of co-amoxiclav than those prescribed with other β-lactams.
- Subjects :
- 0301 basic medicine
Microbiology (medical)
medicine.medical_specialty
medicine.drug_class
030106 microbiology
Antibiotics
beta-Lactams
THERAPY
Cohort Studies
03 medical and health sciences
0302 clinical medicine
Community-acquired pneumonia
Internal medicine
medicine
Humans
FAILURE
Pharmacology (medical)
RATES
030212 general & internal medicine
Retrospective Studies
Pharmacology
Primary Health Care
Proportional hazards model
business.industry
Hazard ratio
COMMUNITY-ACQUIRED PNEUMONIA
Retrospective cohort study
Amoxicillin
medicine.disease
Anti-Bacterial Agents
Infectious Diseases
Italy
DISEASES
Ceftriaxone
COMMUNITY-ACQUIRED PNEUMONIA, RESISTANCE, DISEASES, THERAPY, FAILURE, RATES
Amoxicillin-Potassium Clavulanate Combination
business
RESISTANCE
medicine.drug
Subjects
Details
- ISSN :
- 14602091 and 03057453
- Volume :
- 76
- Database :
- OpenAIRE
- Journal :
- Journal of Antimicrobial Chemotherapy
- Accession number :
- edsair.doi.dedup.....495eab542f4dff3b66a01f25d16b9a5a