Table 6 Results for the Generalized Linear Mixed Model (GLMM) for model effects on the response tool use count by individual per month and predictor variables food availability and rain precipitation.

From: Digging up food: excavation stone tool use by wild capuchin monkeys

Effect

B

SE

F

df1

df2

p-value

Intercept

−4.035

0.154

29.028

3

643

0.000

Plant matter

0.109

0.013

74.974

1

643

0.000

Arthropods

−0.009

0.013

0.478

1

643

0.490

Rain

−0.003

0.001

3.699

1

643

0.055

  1. We used the log of contact time with the individual group as offset variable.