Dear all,

In our romance with MCMCglmm package in R a question arose which we have trouble addressing.

How to properly interpret the "strength" or importance of the phylo effect in our model described as G-structure in numerical values? I'am including below the output of our model. We failed to find any comprehensive information on the proper interpretation of this parameter.

If you would be so kind to give a brief description or reference to materials on the subject I would greatly appreciate it.

DIC: -110.0825

 G-structure:  ~species

        post.mean  l-95% CI u-95% CI eff.samp

species   0.05643 6.245e-39   0.1789     1935

 R-structure:  ~units

      post.mean l-95% CI u-95% CI eff.samp

units   0.03674  0.03025  0.04366    712.2

 Location effects: log.fat.content ~ log.live.lean.mass.w.chitin + sex * season

                            post.mean l-95% CI u-95% CI eff.samp   pMCMC   

(Intercept)                  -0.03023 -0.69297  0.75244   1005.3 0.86671   

log.live.lean.mass.w.chitin   0.53737  0.21619  0.80309    700.3 0.00161 **

sexMale                       0.17146  0.10489  0.23529   4959.0 < 2e-04 ***

seasonSpring                  0.25401  0.18139  0.33403   4811.3 < 2e-04 ***

sexMale:seasonSpring         -0.34973 -0.45863 -0.24046   4959.0 < 2e-04 ***

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Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Kind regards

Bartosz Schramm

http://www.mpcm-evolution.org/practice/online-practical-material-chapter-11/chapter-11-1-simple-model-mcmcglmm

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