Early Life Stress and Child Temperament Style as Predictors of Childhood Anxiety and Depressive Symptoms: Findings from the Longitudinal Study of Australian Children

Table 3

Odds ratios for anxiety and depressive symptoms at age 4 years attributable to person-environment interaction between early life stress and reactive temperament style.

		Anxiety and depressive symptoms at 4 years
Infant reactivity	Stress exposure		Noncase	Case	OR^†	95% CI^†		PPV	AR%
Low	Low	Reference	1405	113	1.0
Low	High	ORe^†	620	64	1.3	(0.96-1.5)		9%	22%
High	Low	ORp^†	360	54	1.9	(1.3-2.6)		13%	47%
High	High	ORpe^†	200	48	3.0	(2.1-4.3)		19%	66%
Total			2585	279
			Expected ORpe		Departure from		% of ORpe attributable to the joint
			assuming no joint action (E)		expected (DE)		action of person and environment
	Additive model of interaction		ORe+ORp-1		ORpe-E		DE/ORpe
			2.2		0.8		28%

^†OR: odds ratio, 95% CI: 95% confidence interval, ORe: lnfant stress exposure, ORp: infant temperament, ORpe: infant temperament and stress exposure, Reference: neither exposure; AR%: attributable risk percent, PPV: positive predictive value.