Date:         Tue, 16 Nov 1999 01:07:52 GMT
Reply-To:     machellew@MY-DEJA.COM
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         machellew@MY-DEJA.COM
Organization: Deja.com - Before you buy.
Subject:      Re: Converting to events/trials data format?

Hi Jin:

I just read Dan Norlund's response to you, and on the off chance that
he wasn't getting to what you're after (I know he's helped me in the
past!), here are my 2cents:

If your variable labeled 'result' is your outcome or dependent variable
that you want to use for proc genmod, and if each observation
represents an individual trial (i.e. these are separate patients, etc..)
then what you can easily do is to add a line of code:

Trials=1;
or maybe x=1;

then in proc genmod your model statement would be:
model result/trials=var1 var2 var3;
or
moel result/x=var1 var2 var3;

In proc logistic, you don't actually need the events/trials syntax, so
just set the dichotomous 'result' variable as  your dependent variable
and off you go.

Good luck :)

Machelle Wilchesky
Department of Clinical Epidemiology
Royal Victoria Hospital
Montreal, Quebec
Canada

In article <38307051.8AE732EC@chollian.net>,
  Jin Kim <kimjin43@chollian.net> wrote:
> Dear SAS-L
>
> As a SAS novice, I want to know the method how I convert the following
> ordinary data to 'events/trials' data format, which can be used in
PROC
> LOGISTIC or GENMOD.
>
> (Of course, I know that above PROCs are possible with ordinary data.
> This question is of educational purpose.)
>
> In the following example data, 'var1-3' are categorical explanatory
> variables, and 'result' is a binary response variable.
>
>         var1    var2    var3    result
> obs1    1        1        2        0
> obs2    2        2        2        1
> obs3    3        1        1        0
> obs4    2        2        1        1
> obs5    1        1        2        1
>   .     .        .        .        .
>   .     .        .        .        .
>   .     .        .        .        .
>
> How can I convert the ordinary data like above to 'events/trials'
> format?
>
> Thank you.
>
> Jin Kim
>
>


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