[R-sig-ME] p-value for glmer with quasipoisson family

Raldo Kruger raldo.kruger at gmail.com
Tue Sep 29 15:09:15 CEST 2009


Hi all,

How come there is no p-value displayed in the summary of the results
of glmer when using the quasipoisson family? Is there a way of
extracting the p-values from the results?

Thanks,
Raldo

> summary(ex5m_r)
Generalized linear mixed model fit by the Laplace approximation
Formula: Plants ~ Treat + Year + (1 | Site)
   Data: ex5m
  AIC  BIC logLik deviance
 4685 4719  -2336     4671
Random effects:
 Groups   Name        Variance Std.Dev.
 Site     (Intercept)  3.550   1.8841
 Residual             12.957   3.5996
Number of obs: 928, groups: Site, 8

Fixed effects:
            Estimate Std. Error t value
(Intercept)  1.02627    0.68130   1.506
TreatGr     -0.38019    0.17078  -2.226
TreatK      -0.84274    0.19838  -4.248
TreatN       0.04644    0.15215   0.305
Yeartwo      0.66848    0.12931   5.170

Correlation of Fixed Effects:
        (Intr) TretGr TreatK TreatN
TreatGr -0.102
TreatK  -0.088  0.350
TreatN  -0.114  0.456  0.392
Yeartwo -0.125  0.000  0.000  0.000




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