Table 3.

Modeling Developmental Trends in Respiratory Sinus Arrhythmia in Children at High- and Low-Familial Risk for Mood Disorder

	Model 1 (N = 163)		Model 2 (N = 143)
Parameter	Coefficient (SE)	t-value	Coefficient (SE)	t-value
Intercept (high risk, age 10)	6.972 (.112)	62.37***	7.121 (.319)	22.30***
Child's parental group	.346 (.173)	2.00*	.370 (.180)	2.06*
Child's age (change per year)	-.004 (.032)	-0.11	.004 (.036)	0.10
Group × Age	.105 (.050)	2.08*	.102 (.054)	1.87+
Depressive disorder (lifetime)	---	---	-.182 (.339)	-0.54

Coefficients reflect parameter estimates for fixed effects in the models. SE= Standard Error. Because the reference group is the high-risk group, the intercept and age parameters reflect this group. The Group and Group × Age effects reflect the difference for the low risk group.

⁺p = .063.

^*p < .05.

^***p < .001.