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Biphasic fracture risk in diabetes: a population-based study
William D Leslie1, Lisa M Lix, Heather J Prior
1Department of Medicine (C5121), University of Manitoba, 409 Tache Avenue, Winnipeg, Manitoba, Canada R2H 2A6. bleslie@sbgh.mb.ca
Bone
|March 30, 2007
Summary
Long-term diabetes increases fracture risk, while newly diagnosed diabetes may reduce it. This biphasic effect highlights the complex relationship between diabetes and bone health.
Area of Science:
- Endocrinology
- Bone Metabolism
- Epidemiology
Background:
- Diabetes mellitus is linked to elevated fracture incidence, but the specific impact, temporal patterns, and influencing factors remain unclear.
- Understanding these relationships is crucial for managing bone health in diabetic populations.
Purpose of the Study:
- To investigate the association between diabetes and fracture rates.
- To examine how diabetes duration, age, and comorbidity modify fracture risk.
Main Methods:
- A retrospective, population-based matched cohort study (1984-2004) in Manitoba, Canada.
- Involved 82,094 diabetic adults and 236,682 controls, analyzing osteoporotic and hip fractures.
- Utilized Poisson regression, assessing diabetes duration and ambulatory diagnostic groups (ADGs) for comorbidity.
Main Results:
- Longer diabetes duration and higher comorbidity (ADGs) independently increased fracture rates.
- Newly diagnosed diabetes was associated with a reduction in osteoporotic (RR 0.91) and hip fractures (RR 0.83).
- Long-term diabetes showed an increased risk for osteoporotic (RR 1.15) and hip fractures (RR 1.40).
Conclusions:
- Long-term diabetes is a significant risk factor for increased fracture rates.
- Newly diagnosed diabetes appears to have a protective effect against fractures.
- The observed biphasic fracture risk may be influenced by factors like obesity and diabetes complications.
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