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pp.170-171
Published Date 1991/2/1
DOI https://doi.org/10.11477/mf.1543900529

Strategies for early diagnosis can be classified into screening and case-finding. Screening programs invite the general public to have tests or examinations intended to find early evidence of disease. Epidemiologic studies of screening for thyroid disease attempt to recruit a population sample of a particular geographic area. Such research studies show the extent of unsuspected disease and the potential benefits of universal screening but do not represent the effectiveness of screening in practice. For example, when patientsare invited to have a periodic health examination and multiphasicscreen, patients at high risk who have avoided regular care in thepast are unlikely to participate.

In contrast to screening, case-finding tests patients who have cometo their physicians for unrelated reasons for the disease. Usually,physicians can do the thyroid screening test when blood would bedrawn for other reasons. Case-finding can cover a larger proportion ofthe population than other strategies because most adults visit aphysician at some time, even if they do not use medical care regularlyor will not respond to a special invitation to be screened.


Copyright © 1991, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1375 印刷版ISSN 0301-2611 医学書院

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