Assessing Water Source Accuracy in Health Studies
Author Information
Author(s): Andria Q. Jones, Catherine E. Dewey, Kathryn Doré, Shannon E. Majowicz, Scott A. McEwen, David Waltner-Toews
Primary Institution: Memorial University of Newfoundland
Hypothesis
How accurate are surrogate measures of home water source in epidemiologic studies?
Conclusion
The study found significant misclassification errors in using surrogate measures for home water sources in drinking water studies.
Supporting Evidence
- The surrogates for home water source had a predictive value of approximately 98% for municipal systems.
- The accuracy of surrogate measures was poor for private water systems, with an average predictive value of 63.5%.
- High misclassification errors were found when using home water source as a surrogate for actual drinking water source.
Takeaway
This study shows that guessing where your drinking water comes from can be really wrong, which can lead to mistakes in health studies.
Methodology
A cross-sectional study using a telephone questionnaire to assess water consumption patterns among residents.
Potential Biases
Potential misclassification of self-reported home water sources could affect the accuracy of the findings.
Limitations
The study was limited to one community, which may affect the generalizability of the results.
Participant Demographics
Residents of Hamilton, Ontario, Canada, with a diverse population of approximately 500,000.
Digital Object Identifier (DOI)
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