HTDS Guide > Findings and Interpretations > Study Objective

HTDS Guide

Findings and Interpretations
	Section Summary Study Objective Findings How the Prevalence of Thyroid Disease in the HTDS Compares to Other Populations How the HTDS Findings Compare to Other Radiation Studies How Reliable Are the Results of the HTDS?

Study Objective

The HTDS is an epidemiological study conducted to determine whether thyroid disease is increased among people who were exposed as young children to releases of iodine-131 from the Hanford Nuclear Site from 1944 through 1957.

The HTDS was designed to test whether the risk of thyroid disease in a group of people exposed to Hanford's iodine-131 differed in relation to the radiation doses their thyroid glands received. The study cannot determine the cause of an individual's disease.

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