[R] new to R: question about nlme

[Mark Trappmann]

Hi all,
I am a PhD student in sociology, studying in Essen, Germany. I am doing an
empirical research with data on three (hierarchical) levels: Individuals
within schools within regions. The data are very sparse with a lot of
schools containing only one individual. In addition the dependent variable
is dichotomous, so that a logistic regression would be appropriate. There
are independent variables on all three levels. After studying the related
literature it seems to me that a (non-linear) random-effects model might be
most appropriate, there being not enough cases to do a more detailed model
(that distinguishes within- and between-cluster regression) like a
random-coefficients model. I also found out that this might be done with the
NLME-package in R. But having no one in my environment who is working on
similar models or with the R software in general and having no experience at
all in programming, calculating this model with R is more than I can handle
on my own. Has anyone got an idea how I could speed up the process? Are
there any workshops? Other people working on related topics for cooperation
or help with the model specification in R language?
Thanks in advance
Mark
-----------------------------
Mark Trappmann
mark.trappmann at uni-essen.de
www.trappmann.50g.com
tel 0201-183-2586 (Uni Essen)
    0203-663944   (Duisburg)
    0175-2532003  (mobil)


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