| Project/Area Number |
25461734
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Psychiatric science
|
|---|
| Research Institution | Oita University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
寺尾 岳 大分大学, 医学部, 教授 (80217413)
|
|---|
| Project Period (FY) |
2013-04-01 – 2017-03-31
|
| Project Status |
Completed (Fiscal Year 2016)
|
| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
|
|---|
| Keywords | リチウム / 自殺率 / 水道水 / 自殺 / 人間生活環境 / 水資源 / 抗自殺効果 |
|---|
| Outline of Final Research Achievements |
The aim of the present study was to investigate the association between lithium levels of tap water and suicide rate with adjustment of potential factors affecting suicide in all 785 cities and 23 wards of Tokyo in all over Japan. Standardized mortality rates (SMRs) of suicide for 2010-2015 were averaged and used for suicide rates. Multiple regression analyses were performed to predict total SMRs, male SMRs, and female SMRs using lithium levels of tap water of 808 cities/wards, 8 districts (Hokkaido, Tohoku, Kanto, Chubu, Kinki, Chugoku, Shikoku, Kyushu), and interactions between lithium levels and individual districts as independent factors. As a result, lithium levels significantly and inversely predicted male suicide SMRs, but not female suicide SMRs. The present findings suggest that lithium in tap water may be inversely associated with male suicide rate.
|
