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Trends in diabetes prevalence among Korean adults based on Korean National Health and Nutrition Examination Surveys III–VI

  • Jae-woo Lee
    Affiliations
    Department of Family Medicine, Chungbuk National University Hospital, Cheongju, Republic of Korea
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  • Hee-Taik Kang
    Correspondence
    Corresponding author at: Department of Family Medicine, Chungbuk National University Hospital, Department of Family Medicine, Chungbuk National University College of Medicine, 1 Chungdae-ro, Seowon-gu, Cheongju, Chungcheongbuk-do 28644, Republic of Korea.
    Affiliations
    Department of Family Medicine, Chungbuk National University Hospital, Cheongju, Republic of Korea

    Department of Family Medicine, Chungbuk National University College of Medicine, Cheongju, Republic of Korea
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  • Hyoung-Ji Lim
    Affiliations
    Department of Family Medicine, Chungbuk National University Hospital, Cheongju, Republic of Korea
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  • Byoungjin Park
    Affiliations
    Department of Family Medicine, Yongin Severance Hospital, Yonsei University, Yongin, Republic of Korea
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Published:February 02, 2018DOI:https://doi.org/10.1016/j.diabres.2018.01.013

      Abstract

      Aims

      The purpose of this study was to investigate trends in diabetic prevalence over the past 11 years using Korea National Health and Nutrition Examination Survey (KNHANES) data. In addition, we aimed to examine trends in diagnosed and undiagnosed diabetes after stratification.

      Methods

      We used data from the KNHANES III (2005), IV (2007–2009), V (2010–2012), and VI (2013–2015). 46,157 participants were included in this study. Diabetes was defined as follows: (1) an answer of ‘yes’ to whether the participants had ever been diagnosed with diabetes by a physician, (2) fasting plasma glucose (FPG) ≥126 mg/dL, or (3) taking oral hypoglycemic agents or insulin. All sampling and weight variables were stratified, and analysis to account for the complex sampling design. The prevalence of diabetes was standardized by the 2005 Korean Housing Census.

      Results

      In men, the crude prevalence of total and undiagnosed diabetes were significantly increased with KNHANES phase (P for trend = 0.002 and 0.004, respectively). The age-standardized prevalence of total, diagnosed and undiagnosed diabetes of both sexes increased with the KNHANES phase (all P for trend < 0.001). Compared with the KNHANES III, the age-adjusted odds ratios (ORs) for the crude-prevalence of undiagnosed diabetes in KNHANES IV, V, and VI were 1.00 (0.72–1.41), 1.08 (0.78–1.51), and 1.42 (1.04–1.96) for men.

      Conclusions

      The prevalence of total, diagnosed and undiagnosed diabetes steadily increased and public efforts should focus on screening for the detection of diabetes, especially in men.

      Keywords

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