Multiple imputation methods for handling missing values in a longitudinal categorical variable with restrictions on transitions over time: a simulation study.
Anurika Priyanjali De SilvaMargarita Moreno-BetancurAlysha Madhu De LiveraKatherine Jane LeeJulie Anne SimpsonPublished in: BMC medical research methodology (2019)
In a similar longitudinal setting we recommend the use of fully conditional specification with predictive mean matching, with restrictions applied during the imputation stage.
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