Table 5.

Adjusted relationship between children’s sleep problems and prenatal happiness

	Child sleep problems (t-transformed score)
Happiness	Model 1			Model 2
	B (Robust SE)	P	Standardized B	B (Robust SE)	P	Standardized B
First trimester(n=1216)
Happiness	−1.71(0.39)	<0.001**	−0.13	−0.65 (0.42)	0.26	−0.05
Child behavioral problems	0.32(0.01)	0.001**	0.62	0.31(0.02)	0.003**	0.61
Second trimester(n=1209)
Happiness	−1.91(0.40)	0.04*	−0.11	−0.62 (0.40)	0.13	−0.04
Child behavioral problems	0.32(0.01)	0.001**	0.62	0.31(0.01)	<0.001**	0.61
Third trimester (n=1211)
Happiness	−2.27 (0.53)	0.001**	−0.13	−0.38 (0.37)	0.40	−0.02
Child behavioral problems	0.32(0.01)	0.001**	0.62	0.31(0.02)	0.003**	0.62

Note:

^1.Model 1 adjusted for child age, sex, home residence, and mother’s and father’s education, birth complications; and prenatal happiness and child behavior entered the model separately.. Model 2: adjusted for variables in Model 1 plus children’s behavioral problems. Sample sizes represent numbers of complete cases of each model. The full models accounted for 39.87%−40.27% of the variance.

^2.B=coefficient, SE=standard error, p=p values

^*p<0.05;

^**p<0.01