Let's say I have a variable, day, which is saved as a factor with 7 levels,
and I use it in a
logistic regression model. I ran the model using the car package in R and
printed out the
results.

mod1 = glm(factor(status1) ~ factor(day), data=mydat,
family=binomial(link="logit"))
print(summary(mod1))

The result I get is:

Coefficients:
                     Estimate Std. Error z value Pr(>|z|)
(Intercept)           -0.4350     0.0379  -11.48   <2e-16 ***
factor(day)Monday     -0.6072     0.0479  -12.69   <2e-16 ***
factor(day)Saturday    0.5964     0.0559   10.67   <2e-16 ***
factor(day)Sunday      1.1140     0.0627   17.78   <2e-16 ***
factor(day)Thursday   -0.4492     0.0516   -8.71   <2e-16 ***
factor(day)Tuesday    -0.9331     0.0496  -18.82   <2e-16 ***
factor(day)Wednesday  -0.8575     0.0486  -17.63   <2e-16 ***


It seems that Friday is being used as the baseline, but I want to know

how I can acquire the coefficient for the baseline (friday)?


I ran mod1$coefficients, but that didn't do the trick.


Can anyone help.


Thank you,

Abraham M.

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