Table 2.

Table 2a Variance component estimates* for posttraumatic stress disorder (PTSD), combat and nicotine dependence (ND) from best fitting model
	Factors common to			Factors common to		Factors specific to ND
	PTSD	combat	ND	combat	ND
	0.33	0.05	0.30	.30		.48
A	(0.22, 0.45)	(0.02, 0.10)	(0.06, 0.23)	(0.24, 0.36)	-	(0.38, 0.57)
C	-	-	-	-	-	-
	0.67	.10	.03	0.55		0.36
E	(0.55, 0.78)	(0.06, 0.16)	(0.01, 0.07)	(0.48, 0.62)	-	(0.30, 0.42)

Table 2b Variance component estimates* for posttraumatic stress disorder (PTSD), combat and alcohol dependence (AD) from best fitting model
	Factors common to			Factors common to		Factors specific to AD
	PTSD	combat	AD	combat	AD
	0.36	0.04	0.20	0.31		0.36
A	(0.25, 0.48)	(0.01, 0.08)	(0.11, 0.33)	(0.25, 0.40)	-	(0.23, 0.46)
C	-	-	-	-	-	-
	0.64	.11	.01	0.54	-	0.42
E	(0.53, 0.76)	(0.07, 0.17)	(0.002,0.04)	(0.47, 0.61)		(0.36, 0.48)

Table 2c Variance component estimates* for posttraumatic stress disorder (PTSD), combat and major depression (MD) from best fitting model
	Factors common to			Factors common to		Factors specific to MD
	PTSD	combat	MD	combat	MD
	0.34	0.02	0.21	0.32		0.12
A	(0.22, 0.46)	(0.00, 0.05)	(0.09, 0.37)	(0.26, 0.38)	-	(0.00, 0.25)
C	-	-	-	-	-	-
	0.66	.13	.09	0.53	-	0.58
E	(0.54, 0.78)	(0.08, 0.20)	(0.04, 0.18)	(0.45, 0.61)		(0.46, 0.70)

^*A- additive genetic, C-shared environment, E-non-shared environment