Quoting smooth random terms mccv::gam
I would quote the p-value, but not the statistic (as it is not a standard F stat). The actual statistic is given here: https://academic.oup.com/biomet/article-pdf/100/4/1005/566200/ast038.pdf
On 14/12/2018 04:33, Smith, Desmond wrote:
Dear All,
I have a mgcv::gam model of the form:
m1 <- gam(Y ~ A + s(B, bs = "re"), data = dataframe, family = gaussian, method = "REML")
The random term is quoted in summary(m1) as, for example,
Approximate significance of smooth terms:
# edf Ref.df F p-value
s(B) 4.486 5 97.195 6.7e-08 ***
My question is, how would I quote this result (statistic and P value) in a formal document?
For example, one possibility is F[4.486,5] = 97.195, P = 6.7e-08. However, arguing against this, ?reverse engineering? of the result using
pf(q= 97.195, df1= 4.486, df2= 5, lower.tail=FALSE)
gives an incorrect p value:
[1] 0.1435508
I would be very grateful for your advice. Many thanks for your help!
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