[R] question about result of loglinear analysis
dwinsemius at comcast.net
Wed Jan 19 02:56:28 CET 2011
On Jan 18, 2011, at 8:45 PM, Lao Meng wrote:
> Hi all:
> Here's a question about result of loglinear analysis.
> There're 2 factors:area and nation.The raw data is in the attachment.
> I fit the saturated model of loglinear with the command:
> glm_sat<-glm(fre~area*nation, family=poisson, data=data_Analysis)
> After that,I extract the coefficients:
> I find that all the coeffients are 1 or very near to 1.
I didn't get that result with that code. Did you perhaps attach some
other data structure that you have failed to inform us about?
Estimate Std. Error z value Pr(>|z|)
(Intercept) 5.40707901 0.06797962 79.53971 0.000000e+00
area -0.12665730 0.01498742 -8.45091 2.890419e-17
nation -0.42998381 0.01615198 -26.62112 3.867012e-156
area:nation 0.04823113 0.00317437 15.19392 3.879947e-52
> How does this happen?Why all the coeffients are 1 or very near to 1?
> My best
> R-help at r-project.org mailing list
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> and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
West Hartford, CT
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