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On Wed, Sep 5, 2012 at 12:21 PM, Federico Calboli
<f.calboli at imperial.ac.uk> wrote:
On 4 Sep 2012, at 22:52, Julie Webbs <webbsjulie at gmail.com> wrote:
Dear Sir/madam I am using* **Package 'lme4*'. in R, I wonder whether the variances reported , say in penicillin, are the variance components that we estimate in SPSS ( Analyze>General linear model> Variance Component).
I, and I suspect many on this list, have no access -- to SPSS -- to the data you are talking about It would be helpful if you could provide 1) the data
Julia may be referring to the Penicillin data set from the lme4 package itself. (Julie: R is a case-sensitive language so "Penicillin" is different from "penicillin".)
2) the model you are using and the results from SPSS 3) the modle and results from your analysis with lme4 and then ask a reasonable question, such as, 'I assume that I am specifying the same model in R and SPSS, but my results differ, could someone help me understand whether I am wrong assuming that I am specifying the same model, or what is going on otherwise?', or, 'SPSS spits out this estimate, how do I get it with lme4?' HTH F
Many thanks, looking forward to hearing from you.
Julie
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-- Federico C. F. Calboli Neuroepidemiology and Ageing Research Imperial College, St. Mary's Campus Norfolk Place, London W2 1PG Tel +44 (0)20 75941602 Fax +44 (0)20 75943193 f.calboli [.a.t] imperial.ac.uk f.calboli [.a.t] gmail.com
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