Why the study?
Is water hardness associated with the suddenness of dying from arteriosclerotic heart disease?
Is water hardness associated with the suddenness of dying from arteriosclerotic heart disease?
The study found an inverse correlation between water hardness and sudden death from arteriosclerotic heart disease, supporting earlier findings from Ontario.
No practice change warranted; extends Ontario data but leaves open causality in arteriosclerotic sudden death.
Peterson, D. R., D. J. Thompson and J. Nam (Univ. of Washington School of Medicine, Seattle, Wash.). Water hardness, arteriosclerotic heart disease and sudden death. Amer, J. Epid., 1970, 92: 90–93.—This study was undertaken to attempt to verify in the State of Washington the finding recently reported from Ontario, Canada, concerning the association of suddenness of dying from arteriosclerotic heart disease and water hardness. Though our methods differed somewhat, we could demonstrate from our data an inverse correlation similar to that found in Ontario suggesting we may have measured the same phenomenon. Verification by others using similar crude methods should be done before more rigorously designed studies can be considered warranted.
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Peterson et al. (1970) studied this question.
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