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→Three mechanisms (assumptions) of data missing
!Missing not at random
!MNAR
|style="text-align:center"|<big>YES</big>
|style="text-align:center"|—
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!Missing at randam
!MAR
|style="text-align:center"|<big>NO</big>|style="text-align:center"|<big>YES</big>
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*'''15% of female participants denied to report''' their body weights after participation '''regardless of measured body weights''', but only 1% of male denied to report
!Missing completely at random
!MCAR
|style="text-align:center"|<big>NO</big>|style="text-align:center"|<big>NO</big>
|
*A participant '''moved to outside cohort area''' because of family affair and was lost to follow up
