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  1. 医学獣医学総合研究科
  1. 医学獣医学総合研究科
  2. 医学獣医学総合研究科学術雑誌掲載論文

Association between lithium in tap water and suicide mortality rates in Miyazaki Prefecture

http://hdl.handle.net/10458/0002000162
http://hdl.handle.net/10458/0002000162
419e5971-e6de-43b2-914e-3a472dec34ce
名前 / ファイル ライセンス アクション
【提出用】リチウム論文.pdf 本文 (859 KB)
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Item type 学術雑誌論文 / Journal Article(1)
公開日 2023-10-26
タイトル
タイトル Association between lithium in tap water and suicide mortality rates in Miyazaki Prefecture
言語 en
言語
言語 eng
キーワード
言語 en
主題Scheme Other
キーワード Elderly people
キーワード
言語 en
主題Scheme Other
キーワード Japan
キーワード
言語 en
主題Scheme Other
キーワード Lithium
キーワード
言語 en
主題Scheme Other
キーワード Rainfall
キーワード
言語 en
主題Scheme Other
キーワード Suicide rate
キーワード
言語 en
主題Scheme Other
キーワード Tap water
資源タイプ
資源タイプ journal article
著者 甲坂, 直美

× 甲坂, 直美

WEKO 34666

ja 甲坂, 直美

ja-Kana コウザカ, ナオミ

en Kozaka, Naomi


Search repository
竹内, 昌平

× 竹内, 昌平

WEKO 22917

ja 竹内, 昌平

ja-Kana タケウチ, ショウヘイ

en Takeuchi, Shouhei


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Ishii, Nobuyoshi

× Ishii, Nobuyoshi

en Ishii, Nobuyoshi

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Terao, Takeshi

× Terao, Takeshi

en Terao, Takeshi

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黒田, 嘉紀

× 黒田, 嘉紀

WEKO 22781
e-Rad 50234620

en Kuroda, Yoshiki

ja 黒田, 嘉紀

ja-Kana クロダ, ヨシキ


Search repository
抄録
内容記述タイプ Abstract
内容記述 Background
Most studies have reported that suicide mortality rates are negatively associated with lithium levels in tap water; however, a few studies showed either no association or a positive association. Thus, the association between suicide mortality and lithium levels in tap water remains controversial. To clarify the association, our study evaluated the association between lithium levels in tap water and suicide mortality rates in Miyazaki Prefecture of Japan, after adjusting for confounding factors.

Methods
We measured lithium levels in tap water across the 26 municipalities of Miyazaki Prefecture in Japan. We examined the standardized mortality ratio (SMR) for suicide in each municipality and used the data as the average suicide SMRs over 5 years (2009–2013). Weighted least-squares regression analysis, adjusted for the size of each municipality’s population, was used to investigate the association between lithium levels in tap water and suicide SMRs. In addition to a crude model, in an adjusted model, potential confounding factors (proportion of elderly people, proportion of one-person households, annual marriage rate, annual mean income, unemployment rate, the density of medical doctors per 100,000 people, annual total rainfall, and proportion of people with a college education or higher) were added as covariates.

Results
We showed that male and female suicide SMRs were not associated with lithium levels in tap water in Miyazaki Prefecture. After adjusting for confounders, male suicide SMRs were significantly and positively associated with the proportion of elderly people in the population and annual total rainfall, and female suicide SMRs were associated with the proportion of elderly people in the population.

Conclusions
No association between lithium levels in tap water and suicide mortality rates was found in Miyazaki Prefecture.
言語 en
内容記述
内容記述タイプ Other
内容記述 Citation:
Kozaka, N., Takeuchi, S., Ishii, N. et al. Association between lithium in tap water and suicide mortality rates in Miyazaki Prefecture. Environ Health Prev Med 25, 26 (2020). https://doi.org/10.1186/s12199-020-00865-6
言語 en
書誌情報 en : Environmental Health and Preventive Medicine

巻 25, 号 1, p. 26 (2020), 発行日 2020-06-27
出版者
出版者 BioMed Central Ltd
言語 en
ISSN
収録物識別子タイプ ISSN
収録物識別子 1342-078X
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1186/s12199-020-00865-6
権利
言語 en
権利情報 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data. Reprints and Permissions
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出版タイプ VoR
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