胃と腸48巻5号

2013年05月発行

特集 炎症性腸疾患 2013 主題 炎症性腸疾患の疫学・病因

炎症性腸疾患の疫学

著者： 桑原絵里加¹ 朝倉敬子¹

所属機関： ¹慶應義塾大学医学部衛生学公衆衛生学教室

ページ範囲：P.547 - P.553

炎症性腸疾患〔IBD ; 潰瘍性大腸炎（UC），Crohn病（CD）〕は，難病・特定疾患に指定されており，患者は認定を受ける際に臨床調査個人票を提出する．臨床調査個人票の電子化データを用いた疫学指標の算出は，問題点はあるものの例数が多く，重要と考えられる．本稿では，臨床調査個人票を用いて有病率や患者特性を集計し海外と比較した．年齢調整有病率（10万人当たり）はUC 84.5，CD 26.3（2009年）であり，以前と比較して増加している．有病率は，アジアや途上国では増加しており，原因として生活様式の近代化や診断技術の進歩，死亡率の低下などの要因が考えられる．一方，欧米での有病率はプラトーに達したとの報告もあり，日本での動向に注意が必要である．

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