Table 6.

Estimates of the variance components from the best-fitting model

	${\mathrm{A}}_{\mathrm{c}}^2$	${\mathrm{C}}_{\mathrm{c}}^2$	${\mathrm{E}}_{\mathrm{c}}^2$	${\mathrm{A}}_{\mathrm{s}}^2$	${\mathrm{C}}_{\mathrm{s}}^2$	${\mathrm{E}}_{\mathrm{s}}^2$
Drug abuse—males	42.4 % (29.9, 62.4)	15.9 % (13.9, 26.7)	10.2 % (9.3, 10.9)	6.4 % (2.7, 24.7)	16.6 % (0, 24.8)	8.4 % (7.5, 13.4)
Criminal behavior—males	32.2 % (21.7, 47.6)	12.1 % (10.5, 21.4)	7.7 % (7.0, 8.4)	10.6 % (0.0, 12.9)	17.8 % (16.8, 25.8)	19.5 % (16.6, 23.1)
Alcohol use disorder— males	38.4 % (26.8, 56.6)	14.4 % (12.5, 24.4)	9.2 % (8.7, 11.8)	12.5 % (1.2, 16.2)	0.2 % (0, 0.5)	25.2 % (17.5, 27.4)
Drug abuse females	63.1 % (6.0, 74.2)	2.8 % (1.8, 3.8)	16.8 % (15.6, 25.8)	5.5 % (2.0, 7.1)	0 % (0, 0)	11.8 % (10.5, 13.2)
Criminal behavior— females	28.1 % (21.4, 29.5)	1.2 % (1.0, 1.5)	7.5 % (6.2, 8.3)	34.8 % (30.0, 42.7)	0 % (0, 0)	28.4 % (27.1, 29.4)
Alcohol use disorder— females	45.8 % (9.1, 47.6)	2.0 % (1.4, 2.5)	12.2 % (11.3, 12.9)	6.4 % (0, 29.6)	15.9 % (13.3, 20.6)	17.6 % (12.0, 24.2)

A additive genetic effects, C shared environmental effects, E individual specific environmental effects; subscript “c” indicates effects common to all the externalizing disorders; subscript “s” indicates effects specific to individual externalizing disorders