Table III.

Model fit statistics of STPI simplex models.

Model	−2LL	df	AIC	Compare	Δ −2LL	Δ df	p
1.ACSE	8546.57	3431	1685	-	-	-	-
2.ADSE	8545.13	3431	1683	-	-	-	-
3.ACE	8568.50	3444	1681	1	21.93	13	0.06
4.ASE	8554.61	3444	1667	1	8.04	13	0.84
5.AE	8577.70	3457	1664	1	31.13	26	0.22
6.E	8682.08	3470	1742	4	104.38	13	<0.01
AE simplex sub-models
Tests of innovation parameters
Drop Ai55-Ai80	8585.63	3463	1660	5	7.94	6	0.24
Drop Ai55	8577.95	3458	1662	5	0.26	1	0.61
Drop Ai60	8583.60	3458	1668	5	5.90	1	0.02
Drop Ai65	8577.89	3458	1662	5	0.20	1	0.66
Drop Ai70	8578.69	3458	1663	5	0.99	1	0.32
Drop Ai75	8577.94	3458	1662	5	0.25	1	0.62
Drop Ai80	8577.70	3458	1662	5	<0.01	1	0.99
Drop Ei55-Ei80	8580.24	3463	1654	5	2.54	6	0.86
Drop Ei55	8577.70	3458	1662	5	<0.01	1	0.99
Drop Ei60	8578.03	3458	1662	5	0.34	1	0.56
Drop Ei65	8578.71	3458	1663	5	1.01	1	0.32
Drop Ei70	8578.17	3458	1662	5	0.47	1	0.49
Drop Ei75	8577.70	3458	1662	5	<0.01	1	0.99
Drop Ei80	8578.56	3458	1663	5	0.87	1	0.35
Tests of transmission parameters
Set all At = 1	8597.53	3463	1672	5	19.83	6	<0.01
Set At50–55	8578.59	3458	1663	5	0.89	1	0.35
Set At55–60	8582.46	3458	1666	5	4.76	1	0.03
Set At60–65	8578.47	3458	1662	5	0.77	1	0.38
Set At65–70	8578.81	3458	1663	5	1.11	1	0.29
Set At70–75	8585.13	3458	1669	5	7.43	1	0.01
Set At75–80	8579.51	3458	1664	5	1.81	1	0.18
Set all Et = 1	8587.11	3463	1661	5	9.42	6	0.15
Set Et50–55	8577.70	3458	1662	5	0.01	1	0.99
Set Et55–60	8579.03	3458	1663	5	1.33	1	0.25
Set Et60–65	8577.97	3458	1662	5	0.27	1	0.60
Set Et65–70	8577.70	3458	1662	5	0.01	1	0.99
Set Et70–75	8579.48	3458	1663	5	1.78	1	0.18
Set Et75–80	8581.40	3458	1665	5	3.70	1	0.05

Note: −2LL = negative log-likelihood; df = degrees of freedom; AIC = Akaike information criterion; Compare = the comparison model for the log-likelihood ratio test; Set transmission factors means constraining beta to equal 1.0. The A_i and E_i entries represent the tests of the genetic and environmental innovations. The A_t and the E_t entries represent the tests of the transmission parameters.