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st: destringing values led to Stata recoding them as missing


From   Suzy <scott_788@wowway.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: destringing values led to Stata recoding them as missing
Date   Fri, 27 Aug 2004 17:44:36 -0400

Dear Statalisters;

I have seven variables of over 300,000 observations each. Within each variable, I have over 2000 different values. These datapoints represent specific codes - for example : (72200 = intervertebral disc disorder). Within each of these seven variables, there are datapoints (values) with dashes or alphabets (Ie: 4109- or V2389). The majority of the values though, are purely numeric (23405). I used the destring option so that I could analyze the data and Stata treated all those datapoints that included dashes and alphabets as missing. Now there is a period . where there used to be a value. I have two questions:

1. Will the restring option restore the datapoints?

2. How can I successfully "destring" these values so that I can include them in my analysis?

Any help and/or specific code would be very helpful as I am only marginally competent with Stata basics.

Thank you!
Suzy


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