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R function for combining p-values

Is there a base R function that implements fisher's method for combining p-value?I'd rather not use a package.

r
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updated by Sam Sam • written by elhamdallalbashi • elhamdallalbashi

May I ask why you don't want to use packages? Many many functions will only be available through very specific packages, as such best fitting your need.

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written by WouterDeCoster WouterDeCoster

That's a trivial function to write yourself.

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written by Devon Ryan Devon Ryan

1 answer

You can use the metap package. But then if you must, then this should work

pchisq((sum(log(p))*-2), df=length(p)*2, lower.tail=F)

Given p is the list of p-values

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written by Sam Sam

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