| Date: | Wed, 30 Jul 2003 10:08:45 -0400 |
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| Reply-To: | "Jed J. Teres" <jjt2002@med.cornell.edu> |
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| Sender: | "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU> |
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| From: | "Jed J. Teres" <jjt2002@med.cornell.edu> |
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| Subject: | do if vs if |
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| Content-Type: | text/plain; charset="us-ascii"; format=flowed |
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Can someone please explain the difference between "do if" and just regular
"if" for me?
I tried to use the following syntax, and if failed:
do if (bdpj(#i) lt 3 AND bdpn(#i) lt 2).
compute bdep(#i)=0.
else if (bdpj(#i) lt 3 AND missing(bdpn(#i)))
compute bdep(#i)=0.
else if (missing(bdpj(#i)) AND bdpn(#i) ge 2)
compute bdep(#i)=1.
end if.
But the following worked fine. I'm coming from a MATLAB background, and I
don't see a difference... what -is- the difference?
if (bdpj(#i) lt 3 AND bdpn(#i) lt 2)
bdep(#i)=0.
if (bdpj(#i) lt 3 AND missing(bdpn(#i)))
bdep(#i)=0.
if (missing(bdpj(#i)) AND bdpn(#i) ge 2)
bdep(#i)=1.
Thanks-
Jedediah Teres
Data Analyst
Weill Medical College of Cornell University
Department of Psychiatry
525 East 68th Street
New York, NY 10021
(212) 746-3874
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