Highlights
- •People encountered an elevated risk of MVCs in 2 years after their diagnosis of type 2 diabetes.
- •Increased risk of MVCs after type 2 diabetes diagnosis was more observable in scooter riders than in car drivers.
- •Increased risk of MVCs after type 2 diabetes diagnosis was observed in all age, sex, and urbanization stratifications.
- •Physicians are encouraged to talk to their patients with type 2 diabetes about diabetic complications, hypoglycemia, and driving.
- •Awareness of MVC risk should be enhanced in patients with type 2 diabetes even in the early stage of disease.
Abstract
Background
Despite the plausibility that diabetes may increase the risk of motor vehicle crashes
(MVCs) due to various diabetes related complications and co-morbidity, findings from
epidemiological studies on the relationship between diabetes and MVCs remained inclusive
mainly due to heterogeneity in the study design and failure to complete consideration
of potential confounders. This study re-visited this putative association with an
improved study design.
Method
This study employed a controlled before–after study design and included 1,264,280
people aged 18–75 years with T2D newly diagnosed from 2009–2014 and an equal number
of age-, sex-, and time-matched controls. The rate ratios (RRs) of vehicle type–specific
incidence rates of MVCs in the 1 and 2 years before and after diabetes diagnosis (or
the matched dates) were compared between the individuals with type 2 diabetes (T2D)
and their matched controls.
Results
The rate of MVCs increased slightly among people with T2D over 1 and 2 years following
diabetes diagnosis, with RRs of 1.04 (95% confidence interval [CI]=1.02–1.07) and
1.11 (95% CI=1.09–1.13), respectively. These RRs were comparable to those obtained
for controls (1.06 and 1.12, respectively). By contrast, the RRs of scooter crashes
were significantly higher in the T2D group than in the control group during the 1
year (1.28 vs. 1.08, p < 0.001) and 2 years (1.32 vs. 1.08, p < 0.001) following diabetes diagnosis.
Conclusion
: T2D diagnosis was associated with a moderate but significant increase in the risk
of MVCs among scooter drivers, but not among car drivers.
Keywords
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Article info
Publication history
Published online: September 27, 2022
Accepted:
September 25,
2022
Editor: Prof. P. Giannoudis.Identification
Copyright
© 2022 Elsevier Ltd. All rights reserved.
