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Associations between Long-Term Air Pollution Exposure and Risk of Osteoporosis-Related Fracture in a Nationwide Cohort Study in South Korea

Author

Listed:
  • Seulkee Heo

    (School of the Environment, Yale University, New Haven, CT 06511, USA)

  • Honghyok Kim

    (School of the Environment, Yale University, New Haven, CT 06511, USA)

  • Sera Kim

    (Interdisciplinary Program in Precision Public Health, Department of Public Health Sciences, Graduate School of Korea University, Seoul 02841, Korea)

  • Seung-Ah Choe

    (College of Medicine, Korea University, Seoul 02841, Korea)

  • Garam Byun

    (Interdisciplinary Program in Precision Public Health, Department of Public Health Sciences, Graduate School of Korea University, Seoul 02841, Korea)

  • Jong-Tae Lee

    (Interdisciplinary Program in Precision Public Health, Department of Public Health Sciences, Graduate School of Korea University, Seoul 02841, Korea)

  • Michelle L. Bell

    (School of the Environment, Yale University, New Haven, CT 06511, USA)

Abstract

Bone health is a major concern for aging populations globally. Osteoporosis and bone mineral density are associated with air pollution, but less is known about the impacts of air pollution on osteoporotic fracture. We aimed to assess the associations between long-term air pollution exposure and risk of osteoporotic fracture in seven large Korean cities. We used Cox proportional hazard models to estimate hazard rations (HRs) of time-varying moving window of past exposures of particulate matter (PM 10 ), sulfur dioxide (SO 2 ), carbon monoxide (CO), nitrogen dioxide (NO 2 ), and ozone (O 3 ) for osteoporotic fracture in Korean adults (age ≥ 50 years) in the National Health Insurance Service-National Sample Cohort data, followed 2002 to 2015. HRs were calculated for an interquartile range (IQR) increase. Comorbidity and prescription associated with osteoporosis, age, sex, body mass index, health behaviors, and income were adjusted in the models. Effect modification by age, sex, exercise, and income was examined. We assessed 56,467 participants over 535,481 person-years of follow up. Linear and positive exposure-response associations were found for SO 2 , while PM 10 and NO 2 showed nonlinear associations. SO 2 was associated with osteoporosis-related fracture with marginal significance (HR for an IQR [2 ppb] increase = 1.04, 95% CI: 1.00, 1.09). The SO 2 HR estimates were robust in analyses applying various moving windows of exposure (from one to three years of past exposure) and two-pollutant models. The central HR estimate of O 3 implied positive associations but was not significant (HR for 0.007 ppm increase = 1.01, 95% CI: 0.97, 1.06). PM 10 , CO, and NO 2 did not show associations. Vulnerable groups by sex, age, exercise, and income varied across air pollutants and there was no evidence of effect modifications. Long-term exposure to SO 2 , but not PM 10 , CO, NO 2 and O 3 , was associated with increased osteoporotic fracture risks in Korean adults.

Suggested Citation

  • Seulkee Heo & Honghyok Kim & Sera Kim & Seung-Ah Choe & Garam Byun & Jong-Tae Lee & Michelle L. Bell, 2022. "Associations between Long-Term Air Pollution Exposure and Risk of Osteoporosis-Related Fracture in a Nationwide Cohort Study in South Korea," IJERPH, MDPI, vol. 19(4), pages 1-15, February.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:4:p:2404-:d:753416
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    References listed on IDEAS

    as
    1. Ha Young Kim & Eun Jin Jang & ByeongJu Park & Tae-Young Kim & Soon-Ae Shin & Yong-Chan Ha & Sunmee Jang, 2016. "Development of a Korean Fracture Risk Score (KFRS) for Predicting Osteoporotic Fracture Risk: Analysis of Data from the Korean National Health Insurance Service," PLOS ONE, Public Library of Science, vol. 11(7), pages 1-15, July.
    2. Yu-Hsuan Lin & Chen-Feng Wang & Hsuan Chiu & Bo-Cheng Lai & Hung-Pin Tu & Pei-Yu Wu & Jiun-Chi Huang & Szu-Chia Chen, 2020. "Air Pollutants Interaction and Gender Difference on Bone Mineral Density T-Score in Taiwanese Adults," IJERPH, MDPI, vol. 17(24), pages 1-15, December.
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