Table 1 The results of logistic regression comparing predator attack odds (probability of attack event/probability of non-attack event) across the four treatment groups, where the colour signals of decorations and/or spider were manipulated

From: Evidence of bird dropping masquerading by a spider to avoid predators

Treatment df Estimate of β SE Z P
Intercept 1 −2.485 0.736 −3.376 0.0007
Control 0 0 0
Spider blackened 1 −0.348 1.265 −0.275 0.7831
Decoration blackened 1 1.974 0.899 2.196 0.0281
Both blackened 1 −0.080 1.272 −0.063 0.9498
  1. 1The β of the control group was arbitrarily designated as 0 to facilitate comparison of probabilities of different events.
  2. 2The ratio between probabilities of two certain events was eβ.