[R-sig-ME] Dealing with heteroscedasticity in a GLM/M

[Highland Statistics Ltd]

Leila,

The following reference shows how you can include covariates in the 
variance structure of
a negative binomial GLM. Extending it to a GLMM is straightforward.

Ntzoufras I. (2009). Bayesian Modeling Using WinBUGS. Wiley & Sons Inc. 
New Jersey.


R code is on his website...



Alain

-- 

Dr. Alain F. Zuur
First author of:

1. Analysing Ecological Data (2007).
Zuur, AF, Ieno, EN and Smith, GM. Springer. 680 p.
URL: www.springer.com/0-387-45967-7


2. Mixed effects models and extensions in ecology with R. (2009).
Zuur, AF, Ieno, EN, Walker, N, Saveliev, AA, and Smith, GM. Springer.
http://www.springer.com/life+sci/ecology/book/978-0-387-87457-9


3. A Beginner's Guide to R (2009).
Zuur, AF, Ieno, EN, Meesters, EHWG. Springer
http://www.springer.com/statistics/computational/book/978-0-387-93836-3


4. Zero Inflated Models and Generalized Linear Mixed Models with R. (2012) Zuur, Saveliev, Ieno.
http://www.highstat.com/book4.htm

Other books: http://www.highstat.com/books.htm


Statistical consultancy, courses, data analysis and software
Highland Statistics Ltd.
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UK - AB41 6FN Newburgh
Tel: 0044 1358 788177
Email: highstat at highstat.com
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