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cohort studyとは？
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質問者が選んだベストアンサー
コホート研究とは、対象とする疾患（例：肺癌）を発症していない人の集団を対象として関連のありそうな要因（例：喫煙）について調査して群別（例：喫煙群と非喫煙群）しておき、一定期間後に各群から対象とした疾患を発症した率を比較する研究方法です。 これに対しては、ケース・コントロール研究というものがあります。 症例対照（ケース・コントロール）研究とは、対象とする疾患を発症した人（例：肺癌患者）をケースとして、個々のケースに対して性・年齢などをマッチさせてコントロールを選定して、発症に関連しそうな要因に関する調査をします。そしてケース群とコントロール群の両群間で要因の曝露率（例：喫煙率）を比較し、ケース群で喫煙率が高ければ、喫煙と肺癌が関連あると言うことになります。 コホートスタディは前向き研究、ケース・コントロールスタディは後ろ向き研究とも言われます。
その他の回答 (1)
参考になるページを紹介しておきます。 http://www.chikennavi.net/word/cohort.htm コホートは前向きを指すことがが多いけれども、後ろ向きもあるということで。
お礼
ありがとうございます。どんな感じか大分分かってきました！
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- ベストアンサー
- 英語
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- 英語
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お礼
例で説明していただくとわかりやすかったです。 ケースコントロールスタディというのもあるのですか・・・ ありがとうございました！