[R] Extracting the p of F statistics from lm

[Michael Kubovy]

On Mar 9, 2007, at 11:18 AM, Cressoni, Massimo ((NIH/NHLBI)) [F] wrote:

> I need to extract the p value from a ANOVA done with lm model
>
> fitting <- lm(var ~ group)
> Sfitting <- summary(fitting)
>
> Sfitting[10][1] gives the F value and the degrees of freedom but I  
> am not able to get the
> p value.

try
Sfitting[4]$coefficients[,4]

I'm not sure that this is the best way, but it works with the example  
for lm()
 > summary(lm.D9)[4]$coefficients[,4]
# (Intercept)     groupTrt
# 9.547128e-15 2.490232e-01

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Professor Michael Kubovy
University of Virginia
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