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RE: st: How to identify multiple substrings within a string


From   ToveLysa Fitzgerald <[email protected]>
To   "[email protected]" <[email protected]>
Subject   RE: st: How to identify multiple substrings within a string
Date   Wed, 16 Jan 2013 08:36:23 +1100

Thank you, that piece of code picked up nil/no/denies cases but it also picked up some cases where nil/no/denies was completely irrelevant to the term diarrhoea as these terms preceeded a large amount of text prior to the occurrence of diarrhoea. Is there any way you can refine the code to limit the number of characters/spaces that occur between the terms nil/no/denies and diarrhoea?
Tove Fitzgerald

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Ryan Kessler
Sent: Monday, 14 January 2013 12:03 PM
To: [email protected]
Subject: Re: st: How to identify multiple substrings within a string

input str30 string
"diarrhoea"
"nil diarrhoea"
"no vomiting/diarrhoea"
"denies diarrhoea/vomiting"
end

gen nodi = regexm(lower(string), "(nil |no |denies )(.*)(diarrhoea)") tab nodi

Best,

Ryan Kessler

On Sun, Jan 13, 2013 at 6:37 PM, Michelle T. Butler <[email protected]> wrote:
> Hi all, I am searching a string variable for cases who don't have diarrhoea.I need to identify records where the terms nil, no or denies preceeds the term diarrhoea in the same sentence.I have already identified that these terms do not always immediately preceed diarrhoea eg. No vomiting/diarrhoea, so I am looking for a way to extract all observations where nil, no, denies occurs in close proximity to diarrhoea, ignoring spelling errors/upper/lower case variations etc.Thank you for your help,Tove Fitzgerald.
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