Cited by 40Diabetes Treatment and ManagementDiabetes Management and ResearchPharmaceutical Practices and Patient Outcomes

Potential diabetes overtreatment and risk of adverse events among older adults in Ontario: A population-based study

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Lega, Iliana C., Campitelli, Michael A., Austin, Peter C., Na, Yingbo, Zahedi, Afshan, Leung, Freda, Yu, Catherine, Bronskill, Susan E. +2 more·2021·Diabetologia

Abstract

Aims/hypothesis More than 25% of older adults (age ≥75 years) have diabetes and may be at risk of adverse events related to treatment. The aim of this study was to assess the prevalence of intensive glycaemic control in this group, potential overtreatment among older adults and the impact of overtreatment on the risk of serious events.Methods We conducted a retrospective, population-based cohort study of community-dwelling older adults in Ontario using administrative data. Participants were ≥75 years of age with diagnosed diabetes treated with at least one anti-hyperglycaemic agent between 2014 and 2015. Individuals were categorised as having intensive or conservative glycaemic control (HbA 1c <53 mmol/mol [<7%] or 54-69 mmol/mol [7.1-8.5%], respectively), and as undergoing treatment with high-risk (i.e. insulin, sulfonylureas) or low-risk (other) agents. We measured the composite risk of emergency department visits, hospitalisations, or death within 30 days of reaching intensive glycaemic control with high-risk agents.Results Among 108,620 older adults with diagnosed diabetes in Ontario, the mean (± SD) age was 80.6 (±4.5) years, 49.7% were female, and mean (± SD) diabetes duration was 13.7 (±6.3) years. Overall, 61% of individuals were treated to intensive glycaemic control and 21.6% were treated to intensive control using high-risk agents. Using inverse probability treatment weighting with propensity scores, intensive control with high-risk agents was associated with nearly 50% increased risk of the composite outcome compared with conservative glycaemic control with low-risk agents (RR 1.49, 95% CI 1.08, 2.05).Conclusions/interpretation Our findings underscore the need to re-evaluate glycaemic targets in older adults and to reconsider the use of anti-hyperglycaemic medications that may lead to hypoglycaemia, especially in setting of intensive glycaemic control.

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Authors
Lega, I. C., Campitelli, M. A., Austin, P. C., Na, Y., Zahedi, A., Leung, F., Yu, C., Bronskill, S. E., Rochon, P. A., & Lipscombe, L. L.
Affiliations
  • University of Toronto (CA)
  • Women's College Hospital (CA)
  • Scarborough Health Network (CA)
  • St. Michael's Hospital (CA)
Corresponding author
Lega, Iliana C.
Venue
Diabetologia
Published
2021-01-25
Volume
64
Issue
5
Pages
1093-1102
ISSN
  • 0012-186X (ISSN-L)
  • 1432-0428
OpenAlex
W3123510151
Cited by
40
References
49
Citations by year
2026: 1 · 2025: 3 · 2024: 11 · 2023: 12 · 2022: 7 · 2021: 6
FWCI
6.74
Type
journal article
Language
en
Open access
Locations
  • Diabetologia (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Heart and Stroke Foundation of Canada
  • Diabetes Canada
  • Ontario Ministry of Health and Long-Term Care
  • University of Toronto
  • Canadian Institutes of Health Research (1018890)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
  • Health Sciences › Medicine › Geriatrics and Gerontology › Pharmaceutical Practices and Patient Outcomes
Keywords
older adults, tight glycemic control, glycemic targets, hypoglycemia, insulin, sulfonylureas, adverse events, emergency department visits, hospitalization, mortality
MeSH terms
Glycemic Control, Overtreatment, Age Factors, Aged, Aged, 80 and over, Aging, Diabetes Mellitus, Type 2, Female, Humans, Hypoglycemia, Hypoglycemic Agents, Male, Ontario, Retrospective Studies, Risk Factors, Cohort Studies, Prevalence, History, 21st Century, Drug-Related Side Effects and Adverse Reactions

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