Table 1.

Linear mixed-effects model for empirical ASR in relation to time (years since 1950) and GSD (genetic sex-determination system) in six amphibian species. ASR is expressed as percentage of males in the adult population to avoid very small model parameter values.

		95% CI
model parameters	posterior mean	lower bound	upper bound	p-value
intercept (ZZ/ZW, metamorphic)	55.140	39.030	70.760	0.001
latitude	−0.205	−0.621	0.240	0.348
altitude	−0.003	−0.007	0.001	0.123
morph (difference of paedomorphic)	−17.860	−26.310	−9.185	<0.001
GSD (difference of XX/XY from ZZ/ZW)	−0.140	−19.310	21.210	0.964
time (slope in ZZ/ZW species)	0.403	0.018	0.766	0.036
time × GSD (difference of slope)	−0.581	−1.010	−0.103	0.016