Global minimum adequate models (MAMs) of mammal extinction risk, using phylogenetically independent contrasts. (Model with no taxon or region interaction terms: , d.f.=302. This model includes 372 species; there are fewer degrees of freedom than this because multispecies polytomies contribute a single degree of freedom each to the model. Model including terms from the MAM plus a taxon–HPD interaction: , d.f.=277. Note that this model excludes nine between-taxon contrasts that are included in the MAM. Model including terms from the MAM plus region–population density and region–geographical range size interactions: , d.f.=206. Degrees of freedom are lower for this model because it excludes species found across multiple regions. #p≤0.05; *p≤0.1; **p≤0.01; ***p≤0.001; HPD=5th percentile value of human population density within a species' distribution.)