Early life stress, prenatal secondhand smoke exposure, and the development of internalizing symptoms across childhood

Table 4 Weights of ELS Mixture Components at Each Age Point

Component	Tertile Weight	Quartile Weight	Quantile Weight
Age 5
Maternal Demoralization	0.44*	0.40*	0.45*
Intimate Partner Violence	0.16	0.22*	0.19*
Maternal Perceived Stress	0.13	0.21*	0.19*
Maternal Perceived Social Support	0.27*	0.13	0.14
Neighborhood Quality	0.002	0.009	0.02
Material Hardship	0.01	0.01	0.02
Age 7
Maternal Demoralization	0.29*	0.14	0.18*
Intimate Partner Violence	0.44*	0.51*	0.45*
Maternal Perceived Stress	0.09	0.15	0.18*
Maternal Perceived Social Support	0.07	0.06	0.004
Neighborhood Quality	0.03	0.05	0.10
Material Hardship	0.09	0.09	0.09
Age 9
Maternal Demoralization	0.31*	0.34*	0.18*
Intimate Partner Violence	0.34*	0.32*	0.45*
Maternal Perceived Stress	0.12	0.15	0.18*
Maternal Perceived Social Support	0.15	0.16	0.004
Neighborhood Quality	0.002	0.01	0.10
Material Hardship	0.08	0.09	0.09
Age 11
Maternal Demoralization	0.28*	0.31*	0.44*
Intimate Partner Violence	0.19*	0.18*	0.16
Maternal Perceived Stress	0.03	0.04	0.06
Maternal Perceived Social Support	0.22*	0.25*	0.008
Neighborhood Quality	0.03	0.01	0.02
Material Hardship	0.25*	0.21*	0.32*

*indicates significant contribution to the mixture model as defined by weight greater than the cutoff τ = 0.167, or the inverse of the number of elements in the mixture (7)

ISSN: 1476-069X