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Evaluation of motor vehicle crashes between scooter riders and car drivers after diagnosis of type 2 diabetes in Taiwan

  • Author Footnotes
    1 Wen-Hsuan Hou and Chung-Yi Li contributed to this article equally.
    Wen-Hsuan Hou
    Footnotes
    1 Wen-Hsuan Hou and Chung-Yi Li contributed to this article equally.
    Affiliations
    College of Medicine, National Cheng Kung University, Tainan, Taiwan

    School of Gerontology and Long-Term Care, College of Nursing, Taipei Medical University, Taipei, Taiwan

    Department of Physical Medicine and Rehabilitation, Taipei Medical University Hospital, Taipei, Taiwan

    Department of Geriatrics and Gerontology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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  • Ya-Hui Chang
    Affiliations
    Department of Public Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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  • Lucia Yovita Hendrati
    Affiliations
    Department of Epidemiology, Biostatistics, Population Studies and Health Promotion, Faculty of Public Health, University of Airlangga, Surabaya, Indonesia
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  • Muhammad Atoillah Isfandiari
    Affiliations
    Department of Epidemiology, Biostatistics, Population Studies and Health Promotion, Faculty of Public Health, University of Airlangga, Surabaya, Indonesia
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  • Author Footnotes
    1 Wen-Hsuan Hou and Chung-Yi Li contributed to this article equally.
    Chung-Yi Li
    Footnotes
    1 Wen-Hsuan Hou and Chung-Yi Li contributed to this article equally.
    Affiliations
    Department of Public Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan

    Department of Epidemiology, Biostatistics, Population Studies and Health Promotion, Faculty of Public Health, University of Airlangga, Surabaya, Indonesia

    Department of Public Health, College of Public Health, China Medical University, Taichung, Taiwan

    Department of Healthcare Administration, College of Medical and Health Science, Asia University, Taichung, Taiwan
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  • I-Lin Hsu
    Correspondence
    Corresponding author.
    Affiliations
    Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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  • Author Footnotes
    1 Wen-Hsuan Hou and Chung-Yi Li contributed to this article equally.
Published:September 27, 2022DOI:https://doi.org/10.1016/j.injury.2022.09.049

      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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