Table 3. Associations between stress instruments and cardiac autonomic nervous system measures (N = 2,624).

	Model 1	Model 2	Model 1	Model 2	Model 1	Model 2	Model 1	Model 2
	HR		PEP		RSA		CAB
Depressive symptoms (β)	0.0	0.0	0.0	0.0	0.1	0.1	0.00	0.00
State anxiety (β)	0.0	0.0	0.0	0.0	0.1	0.0	0.00	0.00
Pregnancy-related anxiety (β)	0.1	0.0	0.0	−0.1	−0.3	−0.2	−0.01	0.00
Parenting daily hassles (β) <$>\scale 90% \raster="rg1"<$>	0.0	0.0	0.0	0.0	−0.1	−0.1	0.00	0.00
Job strain
Low job strain (ref)
No job (β)	0.4	0.3	−0.6	−0.8	−2.0	−4.2	−0.09	−0.15
Moderate job strain (β)	−0.5	−0.3	−0.5	−0.5	−1.3	−1.5	−0.07	−0.08
High job strain (β)	−1.0	−0.8	−1.5 **	−1.5 **	6.4	5.3	−0.02	−0.04

Multivariate associations were explored using mixed models to include cardiac autonomic nervous system measures from both the supine and sitting up position (multilevel regression analyses).

* To model 1, sex and age of the child at measurement were added as covariates.

† To model 2, additionally added covariates are: maternal age, ethnicity, pre-pregnancy BMI, educational level, primiparity, hypertension, smoking, alcohol consumption, gestational age and birth weight.

<$>\vskip -2\scale 60% \raster="rg1"<$> Only analyzed in multiparous women (N = 1,147).

**p<0.05.