a. in a GEE logistic regression:
var(Y)¼fm(1m).
b. if different from 1, the scale factor (f)
will affect the estimated standard
errors of the parameter estimates.
E. To formulate a GEE model, specify:
i. A link function to model the mean as a
function of covariates.
ii. A function that relates the mean and
variance of each response.
iii. a correlation structure to account for
correlation between clusters.
F. Standard logistic regression is equivalent to a
GEE logistic model with an independent
correlation structure, the scale factor forced to
equal 1, and model-based standard errors.XIII. Summary(page 528)
Detailed Outline 535