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1000
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Abstract/Summary
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Following implementation of a national prevention program against iodine deficiency-related disorders in 1993 in Germany, the prevalence of thyroid disorders declined, but aggregated drug dispensation data suggested a recent increase in thyroid hormone use. We aimed to systematically investigate trends in the use of thyroid diagnostic and treatment measures between 2008 and 2019 in Germany. Using the GePaRD database (claims data from ~ 20% of the German population), we determined the annual age-specific and age-standardized prevalence of the use of thyroid diagnostics (thyroid-stimulating hormone (TSH) measurement, thyroid ultrasound, scintiscan, biopsy) and treatment (medication, surgery, radioiodine therapy) from 2008 to 2019 stratified by sex. Between 2008 and 2019, the age-standardized prevalence of TSH measurement increased by 44% in males (from 165 to 238 per 1,000 persons) and by 31% in females (from 134 to 176 per 1,000). The prevalence of thyroid ultrasound use showed no clear time trend, while there was a decrease in the prevalence of scintiscan use (males/females: decrease by 42/43%) and biopsy (males/females: decrease by 42/34%). The prevalence of levothyroxine use increased by ~ 31% both in males (from 36 to 47 per 1,000) and females (from 134 to 175 per 1,000), while the prevalence of thionamide use, iodine use, thyroidectomy, and radioiodine therapy decreased. Our study suggests a continued decline in the prevalence of clinically significant thyroid disorders between 2008 and 2019. The substantial increase in the prevalence of TSH measurement and levothyroxine use during this time period might indicate overuse of diagnostics and overtreatment, warranting further investigation.
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