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Re: st: RE: destringing values led to Stata recoding them as missing


From   Suzy <scott_788@wowway.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: destringing values led to Stata recoding them as missing
Date   Fri, 27 Aug 2004 19:05:46 -0400

I meant to say -  would the restring option restore my datapoints?

Suzy wrote:

Hi John,

I don't know if this matters but I'm not starting with purely string variables. I have variables that have datapoints of which some are string and some are numeric. Also John, would the destring option restore my original values as now the destringed values are missing....
Suzy

Wallace, John wrote:


Suzy
You might want to consider -encode- instead of destring. Presumably you're
starting with string variables. Encode will create a new variable with
incrementing value in (I believe) alphabetical order of the original
variable, plus it will make a value label corresponding to the original
string. This is useful if you need to be able to relate the new variable
value back to the original string.

e.g.
.encode var1, gen(code1)

-JW

-----Original Message-----
From: Suzy [mailto:scott_788@wowway.com] Sent: Friday, August 27, 2004 2:45 PM
To: statalist@hsphsun2.harvard.edu
Subject: st: destringing values led to Stata recoding them as missing

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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