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st: RE: Substituting string values


From   "Nick Winter" <nwinter@policystudies.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Substituting string values
Date   Mon, 4 Nov 2002 11:17:39 -0500

> -----Original Message-----
> From: Rodrigo Briceņo [mailto:rbriceno@ilapp.org] 
> Sent: Monday, November 04, 2002 11:17 AM
> To: Stata
> Subject: st: Substituting string values
> 
> 
> Hello statalisters. I require some help: I'm working with a 
> variable that is
> called "servicio". This variable has three values that 
> require some fixing:
> 
> 1. HOSP.  OBSTETRICIA (two spaces between the words)
> 2. HOSP.OBSTETRICIA (no space between)
> 3. OBSTETRICIA C
> 
> I require that these three values will be the same, for example
> HOSP. OBSTETRICIA (one single space between the two words), how can I
> substitute those values?

It is hard to know; in part it depends on whether there are additional inconsistent codes you want to regularize, or just these three.  If it's these three, you can just do:

	replace servicio = "HOSP. OBSTETRICIA" if servicio=="HOSP.OBSTETRICIA" | servicio=="HOSP.  OBSTETRICIA" | servicio=="OBSTETRICIA C"

With more than a few, though, that would be annoying to type.

Another possibility, is to replace all cases that have the word "OBSTETRICIA" in them:

	replace servicio = "HOSP. OBSTETRICIA" if index(servicio,"OBSTETRICIA")

The index() function tells you the character position that the string "OBSTETRICIA" appears in; for cases where it does not appear, the function returns zero and no change is made.

--Nick Winter


> 
> Thanks.
> 
> Rodrigo
> 
> 
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