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st: Summing variables by row


From   "Leonor Saravia" <lmisaravia@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Summing variables by row
Date   Mon, 15 Sep 2008 08:32:53 -0400

Hello Statalisters,

Im trying to sum many variables by row using the -rowtotal -
function. The problem is that I need to distinguish when the resultant
sum is cero or a missing value. Do you know if theres another command
or function that may sum by varlist and mantain the missing values
when they are present?

Id like to generate a variable 'total' like this:

var1 var 2 var3......varN  total
.       0      .           .        0
1      .       .           .        1
.       .       .           .        .
0      1      .           1        2
.
.
.
1      0    0             1       2


Thank you very much!

Leonor

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