Ecologgers,
I wondered if any eco-statters could provide their opinion in statistics if
they don't mind. I require a statistical program that conducts matched
(paired) logistic regression , which I believe is equivalent to conditional
logistic regression (case-control) for a resource selection study. Most of
the ecological papers that use this statistical approach cite STATA or other
software that I , nor any local lab I know of, do not have licenses for. I
have not seen anyone cite R for this approach in the literature I consult. And
online I am unable to find examples, in R, that are in similar context to my
own data. I live and learn from examples via scientific literature and online
code examples, so I am a bit discouraged at this point, hung up I guess.
However, conditional logistic regression does appear possible in R, from one
source I found online via the survival package. Though, that example was very
limited in depth. This leads me to a few questions.
1) What are my statistical software options for matched logistic regression
(with categorical and continuous data) - and which do users seem to prefer?
2) Has anyone used R for this statistical approach?
3) And, has anyone been able to incorporate random effects (or mixed effects
see Duchesne et al. 2010) by the experimental unit (ie-individual) into this
design?
I admit I am new to logistic regression and resource selection analysis. This
means, I would deeply benefit from detailed examples for this approach. I
appreciate any feedback.
Please feel free to email me off the listserve at the email address below, and
please use the subject heading of this post.
Thanks,
Sidra
Sidra Blake
Land Management and Demonstration Program
Mid-Columbia River NWRC
US Fish and Wildlife Service
MS Student
Natural Resource Sciences
Washington State University
sidra.blakeATwsu.edu
"We shall never achieve harmony with land, any more than we shall achieve
absolute justice or liberty for people. In these higher aspirations, the
important thing is not to achieve but to strive. "
~Aldo Leopold
