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st: Imputation vs substitution with mean

From   James Bernard <>
Subject   st: Imputation vs substitution with mean
Date   Fri, 18 Oct 2013 13:38:09 +0800

Hi All,

I have a longitudinal dataset with a dependent variable of count type.
Mu independent variable are of continuous and categorical type.

My independent variables have many missing values. I want to
substitute the missing values.

One way is to go through what I found out to be "imputation".

I heard that an easier approach is substituting the values with group
mean/population mean. Is this very different form imputation done by
-mi-command in Stata?

Thanks in advance,

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