| Date: | Mon, 14 Apr 2003 09:17:54 -0700 |
| Reply-To: | Dale McLerran <stringplayer_2@YAHOO.COM> |
| Sender: | "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU> |
| From: | Dale McLerran <stringplayer_2@YAHOO.COM> |
| Subject: | Re: Test for trend possible with LOGISTIC for continous data |
| In-Reply-To: | <000001c3026e$aefefb30$0164a8c0@PC1> |
| Content-Type: | text/plain; charset=us-ascii |
|---|
Come again? Trend tests are NOT employed for a continuous
predictor variable, only for ordinal categorical variables. If
you were to take your continuous predictor variable and chop it
into some finite number of levels (greater than two, but usually
less than or equal to five), then we could discuss performing
a trend test. At the risk of sounding offensive, let me just
put in my plug for working directly with a statistician. I am
concerned that you do not really know what you are doing. If
this is for real data which you must analyze for some scientific
objective, then consultation with a statistician is critical.
Of course, this could be part of a homework assignment, in
which case SAS-L is not the place to seek cheap answers.
Dale
--- SASKID <s4a3s2k1id@WEB.DE> wrote:
> Hi,
> Is PROC LOGISTIC capable to do a a test for trend for continous data?
> Or
> better choose FREQ's CA?
> TIA, SASKID
=====
---------------------------------------
Dale McLerran
Fred Hutchinson Cancer Research Center
mailto: dmclerra@fhcrc.org
Ph: (206) 667-2926
Fax: (206) 667-5977
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