ArticleCMAJ open
Population-based outpatient antimicrobial use in Newfoundland and Labrador: a retrospective descriptive study.
Article in CMAJ open. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Outpatient Antibiotic Dispensing Trends Across Canadian Provinces, 2012-2022: A Population-Based Descriptive Study.Cureus · 2026Article
- National retrospective study of regional prescriber-specific variation in community antibiotic prescribing Canada, 2019-2023.BMJ public health · 2026Article
- Overview of Methods for Assessing Antimicrobial Use in Outpatient Settings in High-Income Countries: A Narrative Review.Antibiotics (Basel, Switzerland) · 2025Review
- Data resource profile: PharmaNet, the database for prescription drug dispensing in British Columbia, Canada.International journal of population data science · 2023Article
Corrections and comments
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundData that have been reported on antimicrobial use in Newfoundland and Labrador (NL) do not appear to be representative of use at the population level. We sought to use pharmacy network data on prescriptions to describe outpatient antimicrobial use in NL.
methodsWe analyzed all outpatient antimicrobial prescriptions dispensed between June 1, 2017, and June 8, 2021, from the provincial pharmacy network database and translated deidentified data into SPSS. We excluded prescriptions for parenteral and topical antimicrobials, antivirals and antifungals. We described antimicrobial use using the prescription rate and defined daily dose (DDD) rate.
resultsOverall, we analyzed 1 586 534 prescriptions dispensed to 394 708 people by 3431 prescribers. The rate of antimicrobial use was 741 prescriptions per 1000 population per year (7161 DDD/1000 population/yr). The median duration of prescriptions was 7 (interquartile range 7-10) days. The prescription rate decreased from 867 to 546 per 1000 population per year (-37%) over the study period, and the mean DDD rate decreased from 8387 to 5356 DDD per 1000 population per year (-36.1%). Antimicrobials with the highest DDD rate were amoxicillin (1568 DDD/1000/yr), doxycycline (864 DDD/1000/yr) and ciprofloxacin (633 DDD/1000/yr). Prescribers wrote a mean of 102 (standard deviation 248) prescriptions per year; 3 prescribers wrote more than 2500 prescriptions per year. Overall, 9203 (2.3%) of the 394 708 people in the study population received 4 or more prescriptions per year.
interpretationThe rate of antimicrobial use in NL is lower than previously described in national surveillance data. Potential targets for stewardship intervention include prolonged duration of prescriptions, high-rate prescribers and high-rate patients, but further research is needed to assess the appropriateness of prescriptions according to diagnosis.
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