Journal
JOURNAL OF THE AMERICAN GERIATRICS SOCIETY
Volume 66, Issue 6, Pages 1180-1185Publisher
WILEY
DOI: 10.1111/jgs.15292
Keywords
benzodiazepines; older adults; Choosing Wisely; Australia; Ontario; United States
Categories
Funding
- National Health and Medical Research Council (NHMRC) Centre for Research Excellence in Medicines and Ageing
- NHMRC Postgraduate award
- VA Office of Reporting, Analytics, Performance, Improvement and Deployment
- Beeson Career Development Award NIA [5K08AG04832]
- Ontario Ministry of Health and Long-Term Care
- HCF Research Foundation
- Cancer Australia
- NPS MedicineWise
- Australian Commission on Safety and Quality in Health Care (Atlas of Health Care Variation Advisory Group)
- Queensland Government Department of Health
- Australian Government Department of Health
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OBJECTIVESTo detail annual trends in benzodiazepine incidence and prevalence in older adults between 2010 and 2016 in three countries. DesignObservational multicountry cohort study with harmonized study protocol. SettingThe United States (veteran population); Ontario, Canada; and Australia. ParticipantsAll people aged 65 and older (8,270,000 people). MeasurementsAnnual incidence and prevalence of benzodiazepine use stratified according to age group (65-74, 75-84, 85) and sex. We performed multiple regression analyses to assess whether rates of incident and prevalent use changed significantly over time. ResultsOver the study period, we observed a significant decrease in incident benzodiazepine use in the United States (2.6% to 1.7%) and Ontario (6.0% to 4.4%) but not Australia (7.0% to 6.7%). We found significant declines in prevalent use in all countries (United States: 9.2% to 7.3%; Ontario: 18.2% to 13.4%; Australia: 20.2% to 16.8%). Although incidence and prevalence increased with age in Ontario and Australia, they decreased with age in the United States. Incidence and prevalence were higher in women in all countries. ConclusionConsistent with other international studies, there have been small but significant reductions in the incidence and prevalence of benzodiazepine use in older adults in all three countries, with the exception of incidence in Australia, although use remains inappropriately highparticularly in those aged 85 and olderwhich warrants further attention from clinicians and policy-makers.
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