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Lithium in drinking water
In their short report, Ohgami et al 1 reported lithium levels in drinking water and linked them to the risk of suicide. Adjusting for differences in age structures between centres using standardised mortality ratios (SMRs) is unlikely to account for all important sources of confounding, so that the...
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Published in: | British journal of psychiatry 2010-02, Vol.196 (2), p.159-159 |
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description | In their short report, Ohgami et al 1 reported lithium levels in drinking water and linked them to the risk of suicide. Adjusting for differences in age structures between centres using standardised mortality ratios (SMRs) is unlikely to account for all important sources of confounding, so that the possibility of residual confounding must be considered a major qualifier when considering these results, rather than details to be addressed in future studies. 3 The potential reasons behind the difference in lithium levels in the drinking water samples in the different municipalities are also not explained. Apart from the issue of dietary intake of lithium noted in the letter by Desai & Chaturvedi, 4 there is the question of where people source most of their drinking water, and the use of bottled water. |
doi_str_mv | 10.1192/bjp.196.2.159 |
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subjects | Age differences Confounding Factors (Epidemiology) Dietary intake Drinking water Humans Lithium Lithium - analysis Psychiatry Research Design Statistical analysis Suicide Suicide - statistics & numerical data Suicides & suicide attempts Water Supply - analysis |
title | Lithium in drinking water |
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