Table 2.

Quantile regression results at four levels comparing species duration as a function of degree of specialization. All canids below the median carnivory value are less carnivorous (a); above the median, more carnivorous (b).

	intercept				slope
quantile (τ)	value	s.e.	t	p	value	s.e.	t	p
(a) less carnivorous taxa
0.6	6.127	1.854	3.304	0.002	−1.740	1.841	−0.945	0.350
0.7	6.863	1.700	4.036	0.000	−1.022	1.975	−0.517	0.608
0.8	9.274	1.869	4.963	0.000	−3.085	2.535	−1.217	0.230
0.9	10.409	1.983	5.248	0.000	−3.926	3.259	−1.205	0.235
(b) more carnivorous taxa
0.6	4.767	1.297	3.677	0.001	−0.975	0.963	−1.012	0.318
0.7	6.908	1.749	3.949	0.000	−2.174	1.318	−1.649	0.107
0.8	8.884	1.792	4.960	0.000	−3.280	1.453	−2.257	0.030
0.9	11.474	1.336	8.591	0.000	−4.656	1.184	−3.933	0.000