[R] Retrieving p-values and z values from lmer output
Rick Bilonick
rab45+ at pitt.edu
Mon Aug 21 23:10:42 CEST 2006
On Mon, 2006-08-21 at 16:52 -0400, Rick Bilonick wrote:
> I can't find a way to retrieve z values and p-values from the output
> from lmer in the lme4 package. How is this done?
>
> Rick B.
>
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> and provide commented, minimal, self-contained, reproducible code.
>
I was able to do it this way:
> slotNames(summary(fit.lmer))
[1] "isG" "methTitle" "logLik" "ngrps" "sigma" "coefs"
[7] "vcov" "REmat" "AICtab" "flist" "Zt" "X"
[13] "y" "wts" "wrkres" "method" "useScale"
"family"
[19] "call" "cnames" "nc" "Gp" "XtX" "ZtZ"
[25] "ZtX" "Zty" "Xty" "Omega" "L" "RZX"
[31] "RXX" "rZy" "rXy" "devComp" "deviance" "fixef"
[37] "ranef" "RZXinv" "bVar" "gradComp" "status"
> slot(summary(fit.lmer),"coefs")
Estimate Std. Error z value Pr(>|z|)
(Intercept) -0.02626325 0.03114850 -0.8431628 3.991374e-01
timeAfter 0.42322569 0.02870844 14.7422023 3.453370e-49
> slot(summary(fit.lmer),"coefs")[,4]
(Intercept) timeAfter
3.991374e-01 3.453370e-49
Rick B.
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