Table 2.

Best-fit models that include genetic and prenatal environmental variables

	gest1	gest2	gest3	gest4	gest5	gest6	gest7	gest8
Intercept	−1.374	−0.194	−1.527	−0.771	−1.418	−0.218	−1.129	−0.838
	(1.02)	(1.07)	(1.03)	(1.04)	(1.02)	(1.07)	(1.01)	(1.04)
log(age at end)	0.318a	0.218	0.327a	0.232	0.318a	0.219	0.269	0.233
	(0.15)	(0.15)	(0.15)	(0.15)	(0.15)	(0.15)	(0.15)	(0.15)
5HTT	−0.724c	−0.649c	−0.703c	−0.657c	−0.695c	−0.645c	−0.44c	−0.649c
	(0.17)	(0.17)	(0.17)	(0.17)	(0.17)	(0.17)	(0.13)	(0.17)
MAOA	−0.032	0.144	0.362a	0.128	0.042	0.461b	−0.221	0.449a
	(0.25)	(0.25)	(0.17)	(0.25)	(0.24)	(0.17)	(0.22)	(0.18)
Sex	−0.412	−0.433a	−0.377	−0.437a	−0.344	−0.425	−0.248	−0.426
	(0.21)	(0.22)	(0.22)	(0.22)	(0.21)	(0.22)	(0.17)	(0.22)
Gestation location	−0.924c	−1.198c	−0.713c	−0.946c	−0.809c	0.564a	−0.805c	−0.797c
	(0.19)	(0.32)	(0.17)	(0.19)	(0.22)	(0.27)	(0.18)	(0.18)
No. of locations	—	−0.484b	—	—	—	−0.518c	—	—
		(0.15)				(0.15)
No. of relocations	—	—	—	−0.413b	—	—	—	−0.444c
				(0.13)				(0.13)
Social disruption	—	—	—	—	−0.135	−1.103c	—	—
					(0.08)	(0.31)
Time (d) in hospital	−0.687	—	−0.6	—	—	—	−0.584	—
	(0.45)		(0.44)				(0.43)
5HTT × sex	0.651a	0.588a	0.595a	0.595a	0.576a	−0.596a	—	0.565a
	(0.27)	(0.27)	(0.27)	(0.27)	(0.26)	(0.29)		(0.26)
MAOA × sex	−0.477	−0.585a	−0.511	−0.564	−0.528	—	—	−0.583a
	(0.3)	(0.29)	(0.29)	(0.3)	(0.3)			(0.29)
Gestation location × sex	0.825b	0.876c	0.774b	0.838b	0.751b	0.846b	0.677b	0.807b
	(0.26)	(0.26)	(0.25)	(0.26)	(0.26)	(0.26)	(0.25)	(0.26)
Gestation location × MAOA	0.717a	0.572a	—	0.581a	0.632a	—	0.686*	—
	(0.29)	(0.29)		(0.29)	(0.29)		(0.29)
Gestation location × no. of locations		0.29	—	—	—	0.346	—	—
		(0.2)				(0.2)
Gestation location × no. of relocations	—	—	—	0.359a	—	—	—	0.409b
				(0.15)	—	—	—	(0.14)
Gestation location × social disruption	—	—	—	—	0.131	—	—	—
					(0.08)
Gestation location × time (d) in hospital	0.665	—	0.582	—	—	—	0.558	—
	(0.45)		(0.44)				(0.43)
AIC value and weight	770.06	773.12	774.33	774.61	774.74	775.03	775.58	776.58
	0.55	0.12	0.06	0.06	0.05	0.05	0.03	0.02

5HTT, presence of serotonin transporter gene short allele; MAOA, presence of monoamine oxidase A low-expression gene

Data are presented as β coefficients (SE) such that 0.0 indicates no difference associated with that variable. See Figure 2 for complete description of variables.

^aP < 0.05

^bP < 0.01

^cP < 0.001