[R] Generalized Estimating Equations and log-likelihood calculation

[treebc@telus.net]

Hi there,

I'm working with clustered data sets and trying to calculate log-likelihood 
(and/or AIC, AICc) for my models.  In using the gee and geese packages one 
gets Wald test output; but apparently there is no no applicable method 
for "logLik" (log-likelihood)calculation.

Is anyone aware of a way to calculate log-likelihood for GEE models?

Thanks for the help,
Bruce