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


From   Ryan Kessler <ryan.kessler.stata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: How to identify multiple substrings within a string
Date   Sun, 13 Jan 2013 20:02:37 -0500

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
<Michelle.Butler@hnehealth.nsw.gov.au> 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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