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I use Ranprod to meta-analyze qPCR data from 3 studies (13 genes in
total). Some of these genes are differentially expressed in the same
direction (down-regulated) in the 3 studies with p<0.05 in the 3
studies. So I was expected Rankprod to classify them in the same
group. In fact it does not. Some of these genes appears to be
regulated in the other direction (up) which does not make sense to me.
Does anybody have any idea why?
Thanks for ay suggestion or some help?
-- output of sessionInfo():
R version 2.14.1 (2011-12-22)
Platform: i386-pc-mingw32/i386 (32-bit)
locale:
[1] LC_COLLATE=English_United States.1252
[2] LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C
[5] LC_TIME=English_United States.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] RankProd_2.26.0
loaded via a namespace (and not attached):
[1] tools_2.14.1
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