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Screening for thyroid disorders in a working population

L Schaaf1, T Pohl, R Schmidt

  • 1Zentrum der Inneren Medizin, Abteilung für Endokrinologie, Johann-Wolfgang Goethe Universität Frankfurt/Main.

The Clinical Investigator
|February 1, 1993
PubMed
Summary
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Subclinical thyroid disorders are increasingly detected with advanced screening. This study found low prevalence of overt and subclinical thyroid disease in a working population, with higher rates of goiters and structural abnormalities in older individuals.

Area of Science:

  • Endocrinology
  • Preventive Medicine
  • Diagnostic Screening

Background:

  • Subclinical thyroid disorders are gaining attention due to improved diagnostics and preventive medicine.
  • Screening for thyroid dysfunction is crucial for early detection and management.

Purpose of the Study:

  • To determine the prevalence of subclinical and overt thyroid disorders in a working population.
  • To investigate the association between thyroid dysfunction, goiter, and structural abnormalities.

Main Methods:

  • Thyroid-stimulating hormone (TSH) screening of 6884 individuals.
  • Measurement of triiodothyronine (T3), thyroxine (T4), and thyroxine-binding globulin (TBG) for abnormal TSH levels.
  • Thyrotropin-releasing hormone (TRH) testing and thyroid sonography for selected participants.

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Main Results:

  • Prevalence rates: 0.03% overt hyperthyroidism, 0.33% subclinical hyperthyroidism, 0.09% subclinical hypothyroidism, 0.015% overt hypothyroidism.
  • 28% of hyperthyroid subjects had goiters; 48% had structural abnormalities, predominantly in those over 35.
  • 20% of euthyroid subjects had thyroid enlargement or structural abnormalities; nodules found only in older individuals.

Conclusions:

  • Subclinical thyroid disorders are present but have low prevalence in this working population.
  • Goiters and structural abnormalities are common in individuals with thyroid dysfunction, particularly in older age groups.
  • Thyroid screening and sonography are valuable for identifying thyroid abnormalities and assessing risk.