Table 3.

Minimum adequate models of mammal extinction risk for geographical regions. (Values shown are t values. HPD, human population density; ETI, external threat index. ^#p≤0.05; ^*p≤0.1; ^**p≤0.01; ^***p≤0.001.)

	Australasia	North America	South America	Africa	Eurasia
R2	0.248	0.277	0.114	0.406	0.162
species in model	262	451	607	220	517
degrees of freedom	162	284	266	160	321
life history
adult mass	−2.6#		3.84***	2.79**	2.87**
weaning age				2.99**
ecology
geographical range size	−5.84***	−10.24***	1.69*	−5.21***	−7.52***
geographical range size2				4.09***
environmental
island status
human impact
HPD 5th percentile			−0.81
HPD 5th percentile2			2.3#
HPD rate of increase
ETI		1.57
ETI2		−1.96#
interactions
geographical range size–adult mass	2.55#		−3.73***