「Missing data and imputation」の版間の差分
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2023年12月10日 (日) 13:46時点における版
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Three mechanisms (assumptions) of data missing
Description | [*Example] A cohort study in which participants report their body weight every week to research center | |
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Missing not at random MNAR |
Missing depends on observed data themselves | |
Missing at randam MAR |
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Female participants less likely report their body weights than male participants:
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Missing completely at random MCAR |
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A participant moves to outside cohort area because of family affair which has nothing to do with the study and is lost to follow up:
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