I'm trying to create a model in R, which involves many explanatory variables, a response variable called '' HUNTED '', and the data is spread over 3 different time periods. My dataset is too large and I've just put some of it here so you can understand how your distribution is. The variable "HUNTED" is binomial: either the species is hunted (1) or it is not (0).
My question is: if I leave the "PERIOD" variable the way it is in the script, will the program understand that at the level called "before" there were fewer hunted species than at the "DURING" level? Because of this, the DURING level seems more meaningful, or am I misunderstanding the results?
The results I got on the console are: Random effects: Groups Name Variance Std.Dev. Specie (Intercept) 1,728 1,314 Number of obs: 5622, groups: Specie, 25
Fixed effects: Estimate Std. Error z value Pr (> | z |)
(Intercept) -1.611e + 01 2.510e + 00 -6.420 1.36e-10 *
echo 9.337e-02 6.522e-02 1.432 0.152254
TrophicLevel 4.403e-01 3.561e-01 1.236 0.216324
age 8.676e-04 2.616e-03 0.332 0.740175
log (body_mass) 8.717e + 00 1.495e + 00 5.833 5.46e-09
habitat -5.238e-01 8.269e-02 -6.335 2.37e-10
ABUND 4.432e-01 4.938e-02 8.976 < 2e-16 *
BEFORE -2.850e-01 1.090e-01 -2.615 0.008932 **
DURING 3.478e-01 9.103e-02 3.821 0.000133 ***
taboo -1.057e + 00 1.016e + 00 -1.041 0.297926
allspecies4<-read.csv(file= "dataGLMM.csv", header= TRUE, sep= ";" )
attach(allspecies4)
library(lme4)
allspecies4<- glmer(HUNTED~ eco+TrophicLevel+age+ log(body_mass)+
habitat+ABUND + PERIOD + tabu +(1|Specie),
data=dataGLMM, family=binomial)
summary(allspecies4)Specie body_mass TrophicLevel age eco habitat PERIOD HUNTED ABUND tabu
Cerc_mit 3.7 2 57 2 F DURING 0 2 1
Cerc_mit 3.7 2 57 2 F AFTER 0 3 1
Cerc_mit 3.7 2 57 2 F BEFORE 0 4 1
Cerc_mit 3.7 2 67 2 F DURING 1 2 1
Cerc_mit 3.7 2 67 2 F AFTER 0 2 1
Chlor_cyn 3.7 2 53 2 S DURING 0 3 0
Chlor_cyn 3.7 2 74 2 S DURING 0 3 0
Chlor_cyn 3.7 2 30 2 S DURING 0 4 0
Chlor_cyn 3.7 2 63 2 S DURING 0 4 0
Chlor_cyn 3.7 2 54 2 S DURING 0 3 0
Chlor_cyn 3.7 2 30 2 S DURING 0 4 0
Chlor_cyn 3.7 2 30 2 S DURING 0 3 0
Phil_mont 3.69 2 24 3 F DURING 0 3 0
Phil_mont 3.69 2 24 3 F BEFORE 0 4 0
Phil_mont 3.69 2 33 3 F AFTER 1 4 0
Phil_mont 3.69 2 33 3 F BEFORE 0 4 0
Phil_mont 3.69 2 33 3 F DURING 0 4 0
Phil_mont 3.69 2 43 3 F BEFORE 0 4 0
Phil_mont 3.69 2 43 3 F DURING 0 4 0