Table 2. Coefficients (Mean, SD, and 2.5th and 97.5th percentiles) of the variables included in the models of the probability of detecting the Grey Shrike-thrush on a visit to a site, as a function of traffic noise (Models 1 and 3) and traffic volume (Model 2), with the deviance information criterion (DIC) and receiver-operating characteristic curve (AUC) values for models 1 and 2. Models 1 and 2 include data from all 58 study sites, whereas Model 3 includes data from the 19 study sites in which traffic volume was < 200 vehicles/d.

Variable Mean SD 2.5% 97.5% DIC AUC
Model 1 Constant -0.609 0.710 -2.19 0.258 102.7 0.76
Traffic noise -0.114 0.066 -0.28 -0.041
Model 2 Constant -0.743 0.851 -2.87 0.335 106.6 0.64
Traffic volume -1.340 1.030 -3.99 -0.024
Model 3 Constant -0.116 0.428 -0.87 0.819
Traffic noise -0.122 0.063 -0.26 -0.007