Stata 15 help for fillin

[D] fillin -- Rectangularize dataset


fillin varlist


Data > Create or change data > Other variable-transformation commands > Rectangularize dataset


fillin adds observations with missing data so that all interactions of varlist exist, thus making a complete rectangularization of varlist. fillin also adds the variable _fillin to the dataset. _fillin is 1 for observations created by using fillin and 0 for previously existing observations.

varlist may not contain strLs.


Setup . webuse fillin1

List the data . list

Create observations with missing values for all combinations of sex, race, and age_group that are in the dataset . fillin sex race age_group

List the data . list

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