Aside from the point that -if- as a programming command does not
evaluate observation-by-observation, I wonder about part of your -if-
condition.
Does not
(lbresc!="POSITIVE 1:128" | lbresc!="POSITIVE 1:16")
always evaluate to TRUE? That is, whatever the value of lbresc, that
value will be different from (at least) one of those two things.
Perhaps you intend "&" rather than "|" between those two?
--Nick Winter
Martin Weiss wrote:
What is different about the results? Give us more info! We have had a lot of
posts about the difference between the -if- qualifier and the -if-
programming command in the past...
HTH
Martin
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of lou apicella
Sent: Thursday, October 09, 2008 5:55 PM
To: [email protected]
Subject: st: if programming command
Hello Statalisters,
I'm trying to convert some logical statements into nested if statements. I
feel the two statements below should give the same result but they do not.
What am I do wrong here?
Thanks in advance.
Lou.
replace syphilis=1 if visit==1 & lbcd=="SYP_RPR" & (lbresc!="POSITIVE 1:128"
| lbresc!="POSITIVE 1:16")
if visit==1 {
if lbcd=="SYP_RPR" & (lbresc!="POSITIVE 1:128" | lbresc!="POSITIVE 1:16"
) {
replace syphilis==1
}
}
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--------------------------------------------------------------
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Assistant Professor 434.924.3359 f
Department of Politics [email protected] e
University of Virginia faculty.virginia.edu/nwinter w
PO Box 400787, 100 Cabell Hall
Charlottesville, VA 22904
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