Table 2.

Generalized linear mixed models (GLMMs) investigating the relationship between year of description and probability of endangerment for (a) amphibians and (b) mammals. The models are ranked by Akaike's Information Criterion corrected for small sample size (AIC_c). Predictor terms shown are year = year of description. Also shown are the number of parameters (k), log likelihood (LL), the difference in AIC_c of each model from the highest ranked model (ΔAIC_c), AIC_c weights representing the probability of each model being the best (wAIC_c), and the per cent deviance explained by each model (%DE).

rank	model	k	LL	AICc	ΔAICc	wAICc	%DE
(a) amphibians (n = 4661, 1898 threatened)
1	∼year	3	–2816.71	5639.43	0	≈1	9.82
2	null	2	–3123.56	6251.13	611.70	≈0
(b) land mammals (n = 4530, 1142 threatened)
1	∼year	4	–2198.07	4404.16	0	≈1	8.43
2	null	2	–2400.42	4804.85	400.69	≈0