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st: range of a stringvariable
From
"Tomas Lind" <[email protected]>
To
<[email protected]>
Subject
st: range of a stringvariable
Date
Wed, 28 Apr 2010 16:02:51 +0200
Dear listers
Choose individuals based on a string variable with a range of values
I am working with ICD-10 codes (codes for different types of diseases). The
codes start with a letter A - Z followed by 2 or 3 digits. In some cases
they might end with the letter A. Say that I have a dataset with 5 subjets
(id=1 to 5) with these ICD-10 codes (fake data, in reality I have millions
of subjects):
I460 E343 I46 C764 E438
How can I choose individuals with ICD-10 codes in the range E300 to E499
(not including codes that end up with A). What about if I want to include
codes that ends with an A. (There is a convenient command for ICD-9 codes,
but not for ICD-10 codes.)
Any suggestions are welcome.
/Tomas
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