[R] Logistic Regression output baseline (reference) category

[Bert Gunter]

The reference category is aliased with the constant term in the
default contr.treatment contrasts.

See ?contr.treatment , ?C, ?contrasts

If you don't know what this means, you should probably consult a local
statistical resource or ask about linear model contrasts at a
statistical help website like stats.stackexchange.com. This list is
for R programming questions.

Cheers,
Bert


Bert Gunter

"The trouble with having an open mind is that people keep coming along
and sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )


On Tue, Mar 15, 2016 at 1:27 PM, Michael Artz <michaeleartz at gmail.com> wrote:
> Hi,
>    I am trying to use the summary from the glm function as a data source. I
> am using the call sink(<some file>) then
> summary(logisticRegModel)$coefficients then sink().  The independent
> variables are categorical and thus there is always a baseline value for
> every category that is omitted from the glm output.  I am interested in how
> to get the Z column for all of the categorical values.  I don't see any row
> for the reference category.  How can I get this Z value in the output?
>
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>
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