Table 4.

Regression coefficients depicting group membership as a predictor of cardiac autonomic indices

Effect	B	SE	t	p	R 2
Coefficients: RSA model
Intercept	5.87	0.88	6.70	<0.001*	0.18
Groupa	−0.75	0.37	−2.04	0.046*
Age	−0.01	0.02	−0.44	0.659
Medication use	−0.33	0.23	−1.48	0.144
Parenting stress	<0.01	0.01	0.27	0.785
Coefficients: IBI model
Intercept	1.92	<0.01	466.47	<0.001*	0.17
Groupa	<0.01	<0.01	0.16	0.876
Age	<0.01	<0.01	2.92	0.005*
Medication use	<0.01	<0.01	−1.11	0.272
Parenting stress	<0.01	<0.01	0.47	0.641

^aThe control group was set as the reference category

*p < 0.05