[R] lmer p-values for fixed effects missing

From: UKaraoz <UKaraoz_at_lbl.gov>
Date: Tue, 18 Nov 2008 14:17:00 -0800 (PST)

I am trying to replicate the repeated measures example from Dr.Faraway's book
(Extending the linear model with R) as follows:

data(vision)
vision$npower <- rep(1:4,14)

mmod <-lmer(acuity~power+(1|subject)+(1|subject:eye),vision)

When I look at the fixed effects p-value, it is missing. Am I missing something here?
Thanks.

Fixed effects:

            Estimate Std. Error t value

(Intercept) 112.6429 2.2348 50.40
power6/18 0.7857 1.5400 0.51 power6/36 -1.0000 1.5400 -0.65 power6/60 3.2857 1.5400 2.13
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Received on Wed 19 Nov 2008 - 00:28:12 GMT

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