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Can J Diabetes 40:35-42.
University of Alberta, Edmonton, AB, Canada; Institute for Clinical Evaluative Sciences, Toronto, ON, Canada; Women’s College Hospital, Toronto, ON, Canada; McMaster University, Hamilton, ON, Canada
OBJECTIVES: Diabetes frequently coexists with other conditions, resulting in poorer diabetes self-management and quality of life, higher risk for diabetes-related complications and higher health service use compared to those with diabetes only. Few Canadian studies have undertaken a comprehensive, population-level analysis of comorbidity and health service utilization by older adults with diabetes. This study examined comorbidity and its association with a broad range of health services in a cohort of community-dwelling older adults with diabetes in Ontario, Canada.
METHODS: We linked multiple administrative databases to create a cohort of 448,736 older adults with diabetes, described their comorbidities and obtained their 1-year use of health services (physician visits, emergency department visits, inpatient hospital admissions, home care use, nursing home admissions). We examined comorbidity patterns by age and gender and estimated the prevalence of 20 comorbid conditions and the most common condition clusters. The association between number of comorbidities and health service use was also examined.
RESULTS: More than 90% of the cohort had at least 1 comorbid condition. The number of comorbidities increased with age for both genders, and hypertension was the most common, affecting 79.1% of the cohort. Other common conditions included other cardiovascular conditions, ischemic heart disease, arthritis and anxiety. Utilization of all health services increased with the number of comorbid conditions.
CONCLUSIONS: Health service use was driven by the number of comorbid conditions, including diabetes and nondiabetes-related conditions, highlighting the importance of aligning diabetes care plans with patients’ comorbidities.
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