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→Three mechanisms (assumptions) of data missing
!style="width:7em" rowspan="2"|
!style="witdh:4em" rowspan="2"|Abbr.
!colspan="2"|Does missing depend Missing depends on.../<br>Missing occurs because of
!rowspan="2"|[Example]<br>A cohort study in which participants self report their body weight every week via special app installed on their smartphones for 52 weeks in total
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!style="width:5em7em"|missing value itself?!style="width:5em7em"|other observed variable(s)?
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!Missing not at random
!MNAR
|style="text-align:center"|YES
|style="text-align:center"|—
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*Some participants '''intentionally deny to report higher body weights they don't like''' and only report lower body weights they like
