Table 4.

Regression Models Testing the Effects of Prenatal Cortisol, Prenatal Mood, and Postnatal Mood on Infant Behavior

	Infant reactivity ratings1 (Harvard Protocol)			Negative Reactivity2 (IBQ)			Positive Reactivity2 (IBQ)
	Odds Ratio	95% CI	p	β	95% CI	p	β	95% CI	p
Prenatal Cortisol (Acclimate)	1.60	(1.04, 2.46)	.03*	.09	(−.03, .20)	.15	−.03	(−.18, .13)	.72
Prenatal Mood3	0.72	(0.34, 1.50)	.38	.00	(−023, .23)	.99	−.14	(−.44, .16)	.35
Postnatal Mood3	0.96	(0.49, 1.88)	.91	.24	(.03, .44)	.03*	.24	(−.04, .51)	.09
Infant Sex4	1.45	(0.60, 3.50)	.41	.03	(−.22, .28)	.80	−.25	(−.58, .07)	.13
Family Income5	1.13	(0.39, 3.27)	.82	−.14	(−.45, .16)	.35	−.32	(−.72, .07)	.10
Parity6	0.47	(0.18, 1.22)	.12	−.07	(−.34, .19)	.58	−.04	(−.38, .31)	.83
Maternal age	0.90	(0.82, 0.99)	.03*	.01	(−.02, .03)	.51	−.01	(−.04, .02)	.52

¹Analysis by proportional odds logistic regression model adjusted for covariates listed in the table: infant sex, family income, parity, and maternal age.

²Analysis by multiple linear regression models adjusted for covariates listed in the table.

³Prenatal and postnatal mood scores were the average of standardized STAI, CES-D, and PSS scores measured at pre- and post- natal time points, respectively.

⁴Male infant was the reference group in all models.

⁵Family income is 1 if it is greater than $26000 and 0 otherwise. Odd Ratio indicates the odds of 0 versus 1.

⁶Parity is 1 if the woman had no child and 0 otherwise. Odd Ratio indicates the odds of 0 versus 1.

^*p<0.05