Extracts coefficients from gee Objects

DESCRIPTION:

Extracts the estimated mean, scale and correlation parameters for gee objects.

USAGE:

coef.gee(object, type="mean") 

This is a method for the function coef() for objects inheriting from class "gee".

REQUIRED ARGUMENTS:

object
an object inheriting from class "gee" representing a fitted model.

OPTIONAL ARGUMENTS:

type
a character string indicating the desired type of coefficient, with choices:

"mean"
regression or mean coefficients (default);
"correlation"
correlation parameters;
"scale"
scale or dispersion parameter;
"all"
all of the above.

VALUE:

Selected coefficients of the given gee model.

DETAILS:

The gee model includes the regression or mean coefficients for the covariates of the model, in addition to a scale or dispersion parameter, and correlation parameters associated with the correlation design of the model.

SEE ALSO:

, , ,

EXAMPLES:

Seizure.Subject <- recordDesign(cluster = "Subject", data = Seizure)

gee.out <- gee(y~Time+group, cluster=cbind(clusterID,recordID),
               variance="glm.scale", correlation="exchangeable", 
               family="poisson", link="log", data=Seizure.Subject)

coef(gee.out,type="all") ## returns a list of all model coefficients