[R] Major difference in multivariate analyses SPSS and R

Peter Dalgaard p.dalgaard at biostat.ku.dk
Mon Aug 4 10:44:57 CEST 2008

Draga, R. wrote:
> .....
> Would somebody know how it is possible that in SPSS we get p<0.001 and
> in R we get p=0.24?
> And, in 'R' the 95% CI of the Odds Ratio is 6.2-14.1. Why is the
> p-value=0.24?
You asked this before and you are still not providing sufficient 

Harold already pointed out that excluding an important variance 
component in SPSS could easily explain a difference in p values. 
However, the discrepancy between CI and p value suggests that you could 
be misreading the output from lmer(), and/or misspecifying the model. 
Now,  you are simply not telling us

  - what you did
  - what the data are like (esp. which variables vary within and between 
  - what the output was
  - which version of lmer() was used

Also you are confusing us with "variable 1", "variable 2", "variable A", 
and "Var B"

   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
 (*) \(*) -- University of Copenhagen   Denmark      Ph:  (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)              FAX: (+45) 35327907

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