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Diabetes and risk of fracture-related hospitalization: the Atherosclerosis Risk in Communities Study
Andrea L C Schneider1, Emma K Williams, Frederick L Brancati
1Department of Epidemiology, Bloomberg School of Public Health, The Johns Hopkins University, Baltimore, MD, USA.
Insights
Diabetes increases fracture risk, especially with poor glucose control. This study highlights the need for fracture risk assessment and prevention in individuals with type 2 diabetes.
Area of Science:
- Epidemiology
- Metabolic Diseases
- Gerontology
Background:
- Diabetes mellitus is a growing global health concern.
- Fracture risk is a significant complication, particularly in older adults.
- Glycemic control is a key factor in managing diabetes complications.
Purpose of the Study:
- To investigate the association between diagnosed and undiagnosed diabetes, glycemic control, and fracture-related hospitalizations.
- To determine if diabetes independently predicts fracture risk.
- To assess the impact of insulin treatment and hemoglobin A1c levels on fracture risk.
Main Methods:
- Analysis of data from the Atherosclerosis Risk in Communities (ARIC) Study.
- Inclusion of 15,140 participants with a median follow-up of 20 years.
- Utilizing Cox proportional hazards models to adjust for confounding factors and assess risk.
Main Results:
- 1,078 incident fracture-related hospitalizations were recorded.
- Diagnosed diabetes was independently associated with a 74% increased risk of fracture (HR, 1.74).
- Poor glycemic control (HbA1c ≥8%) and insulin treatment further elevated fracture risk in diabetic individuals.
Conclusions:
- The findings support proactive fracture risk assessment in individuals with type 2 diabetes.
- Recommendations for implementing fracture prevention strategies are warranted, particularly for those with suboptimal glucose control.
- This research underscores the importance of comprehensive diabetes management beyond glycemic targets.
Objective:
To examine the association between diabetes, glycemic control, and risk of fracture-related hospitalization in the Atherosclerosis Risk in Communities (ARIC) Study.
Research Design And Methods:
Fracture-related hospitalization was defined using International Classification of Diseases, 9th revision, codes (733.1-733.19, 733.93-733.98, or 800-829). We calculated the incidence rate of fracture-related hospitalization by age and used Cox proportional hazards models to investigate the association of diabetes with risk of fracture after adjustment for demographic, lifestyle, and behavioral risk factors.
Results:
There were 1,078 incident fracture-related hospitalizations among 15,140 participants during a median of 20 years of follow-up. The overall incidence rate was 4.0 per 1,000 person-years (95% confidence interval [CI], 3.8-4.3). Diagnosed diabetes was significantly and independently associated with an increased risk of fracture (adjusted hazard ratio [HR], 1.74; 95% CI, 1.42-2.14). There also was a significantly increased risk of fracture among persons with diagnosed diabetes who were treated with insulin (HR, 1.87; 95% CI, 1.15-3.05) and among persons with diagnosed diabetes with hemoglobin A1c (HbA1c) ≥8% (1.63; 1.09-2.44) compared with those with HbA1c <8%. Undiagnosed diabetes was not significantly associated with risk of fracture (HR, 1.12; 95% CI, 0.82-1.53).
Conclusions:
This study supports recommendations from the American Diabetes Association for assessment of fracture risk and implementation of prevention strategies in persons with type 2 diabetes, particularly those persons with poor glucose control.
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