p value is 0, padj is 0
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Wirayatida • 0
@6677b6ad
Last seen 13 hours ago
Japan

I run DESeq2 in R program. However, I got p-value is 0 and padj is 0. I already remove NA data. How can I solve this problem? Do I need to re-calculate the count from the raw data or not?

DESeq2 • 66 views
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@james-w-macdonald-5106
Last seen 1 minute ago
United States

It is quite possible for a very small p-value to remain very small after multiplicity adjustment. I don't know the cutoff for DESeq2 to report a p-value as zero, but apparently that gene has both an adjusted and unadjusted p below that cutoff.

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> set.seed(1); t.test(rnorm(200,rep(c(0,80),each=100)) ~ rep(0:1,each=100))$p.value 
[1] 0
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