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st: How to get the mode within varlist

From   Oberschachtsiek Dirk <>
Subject   st: How to get the mode within varlist
Date   Mon, 7 Feb 2005 18:09:56 +0100

I am working on a dataset that provides several variables on some attributes (e.g. date of birth). Moreover, this dataset may provide more than one observation per person, too. Thus the dataset holds multiple information for each attribute. 
However, these attributes are not constant within varlist and/or by observations - and there is no evidence which is the best information to use. 

A way out of this is to use the -mode- of varlist by observation as the "true" value. Is it possible to solve this by using - egen- [like -bysort id: egen sex = rmode(varlist)- which is not implemented in stata] or is there any other way to get out of this in stata? 


Nr.	Id	var1	var2	var3	outcome_var

obs1	A	2	1	1	2
obs2	A	2	2	2	2
obs3	B	2	2	2	2
obs4	C	1	1	2	1
obs5	D	1	1	2	1
obs6	D	2	1	1	1

Dirk Oberschachtsiek
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