[BioC] EdgeR: dispersion and number of samples

[anna [guest]]

Hello dear List,
if I do an analysis with A and B, and I compare B to A,
would I have the same results as if I did an analysis with A, B, C, and compared B to A ?
I guess dispersion changes so results change slithly ?
thanks,
anna

 -- output of sessionInfo(): 

R version 2.15.1 (2012-06-22)
Platform: i386-pc-mingw32/i386 (32-bit)

locale:
[1] LC_COLLATE=French_France.1252  LC_CTYPE=French_France.1252   
[3] LC_MONETARY=French_France.1252 LC_NUMERIC=C                  
[5] LC_TIME=French_France.1252    

attached base packages:
[1] splines   stats     graphics  grDevices utils     datasets  methods  
[8] base     

other attached packages:
[1] edgeR_3.0.0  limma_3.14.1


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