highly significantp ‐value < 0.001
The function “overdisp” in the package “sjstats” (Lüdecke, 2018 ) returned a highly significant dispersion ratio for the Poisson model (Pearson's χ 2 = 99,728.804, p ‐value < 0.001), and the function “zero_count” in “sjstats,” which tests for zero count overfitting, returned 117 observed zero counts versus 0 predicted zero counts.