Mixed-model-binary logistic model with dependence between individual repeated measures
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On 11-01-07 06:59 AM, Anna Ekman wrote:
Hi, I am a novice R user and do not know how to properly mail to this list. I apologies if I do it in the wrong way. I want to analyze my data using a random intercept (later extended also to random slope) logistic model for a binary outcome (later extended to a ordinal outcome). This I have been able to do in SAS if assuming the repeated measurements within an individual to be independent, but I want to be able to choose different covariance structures for the individual measurements. This I cannot do directly in either SAS or STATA, and therefore now turn to R. How can I do this in R? Anna
I'm surprised that you can't do this in SAS (PROC MIXED, NLMIXED, or GLIMMIX?) or Stata <http://www.gllamm.org/>, but: if you want to do it in R, your choices are glmmPQL in the MASS package or possibly one of the generalized estimating equation packages (geese, geepack?) I would recommend the following references for getting started: Zuur et al Mixed models (Springer) Pinheiro and Bates 2000 (Springer), especially the material on temporal autocorrelation models Extending to a ordinal outcome with temporal autocorrelation could be tricky ... -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk0nNJsACgkQc5UpGjwzenMymACfbqx+gtOjyhoX9hHpPyO/vbVg NXUAniLvM+8voyzKA6axKLyJLclqeBhY =wBwK -----END PGP SIGNATURE-----