{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,28]],"date-time":"2026-07-28T03:46:33Z","timestamp":1785210393609,"version":"3.55.0"},"reference-count":23,"publisher":"S. Karger AG","issue":"1","license":[{"start":{"date-parts":[[2010,1,1]],"date-time":"2010-01-01T00:00:00Z","timestamp":1262304000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"},{"start":{"date-parts":[[2010,1,1]],"date-time":"2010-01-01T00:00:00Z","timestamp":1262304000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Neuroepidemiology"],"published-print":{"date-parts":[[2010]]},"abstract":"<jats:p>&lt;i&gt;Background:&lt;\/i&gt; The purpose of this study is to investigate the epidemiology and medical expenses of myasthenia gravis (MG) in Taiwan. &lt;i&gt;Methods:&lt;\/i&gt; Cases of MG were identified from the National Health Insurance Research Database with corresponding codes of the International Classification of Diseases, ninth revision (ICD-9), from January 2000 to December 2007. Age- and sex-specific incidences were estimated by dividing the incidence number by population data obtained from the Department of Statistics, Ministry of the Interior. &lt;i&gt;Results:&lt;\/i&gt; During the study period, 5,211 cases were identified. The incidence ratio of males to females was 0.68. The average annual incidence rate was 2.1\/100,000. MG occurred in all age groups with a higher incidence in older individuals and the lowest incidence in the 10- to 14-year-olds for both sexes. Among the 5,211 cases, 615 (12%) had a neoplasm of the thymus. The prevalence increased steadily during the study period from 8.4\/100,000 in 2000 to 14.0\/ 100,000 in 2007. &lt;i&gt;Conclusions:&lt;\/i&gt; This is the first population-based epidemiological study of MG in Taiwan. 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