差分

|*Missing depends on observed data|*Some participants '''intentionally deny to report higher body weights they don't like ''' and only report lower body weights they like**Data of those participants are missed '''because of the values in the variable ''body weight'' themselves'''

*Missing may does not depend on '''observed unobserved data''' , but does not may depend on ''unobserved 'observed data'''*Missing The cause of missing can be explained by|*15% of female participants deny to report their body weights after the agreement regardless of measured body weights, but only 1% of male deny to report:**Data of female participants are more likely missed not because of data (body weights) themselves but because female are more likely reluctant to report their body weights**In other words, values in the variable ''body weight'' themselves do not affect the missing but another variable ''sex'' affects the missing of values in the variable ''body weight''

*Missing does NOT depend on '''observed data''' NOR on '''unobserved data'''

|*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 at the 10th week:**Data after the move are missed not because of data (body weights) themselves, nor because of the participant's unobserved (unmeasured) characteristic related to the study