Fig. 9From: Nationwide comprehensive epidemiological study of rare diseases in Japan using a health insurance claims databaseComparison of prevalence distribution of rare diseases in NDB and Orphanet data. The preavalences are calcurated per 100,000 persons as in the Orphanet report. As more recent data tends to be more accurate, the figure of NDB is generated based on the data in the most recent year, 2018Back to article page