Estimate

95% CI

p

Infantile aggression

Maternal postpartum depressive symptoms

0.072

[0.029, 0.117]

0.001

Maternal problems in reciprocal social behavior

0.100

[0.011, 0.186]

0.027

Maternal age at birth

0.009

[−0.044, 0.061]

0.726

Paternal age at birth

−0.023

[−0.064, 0.024]

0.309

Maternal years of education

−0.041

[−0.140, 0.059]

0.413

Paternal years of education

−0.062

[−0.145, 0.020]

0.142

Marital status at pregnancy (unmarried)

0.987

[0.043, 1.809]

0.022

Annual household income

3 - 7.9 million yen

0.191

[−0.275, 0.644]

0.430

<3 million yen

0.480

[−0.313, 1.280]

0.250

Maternal history of depression and/or anxiety disorders (yes)

−0.083

[−0.628, 0.399]

0.759

Infant gender (male)

0.076

[−0.260, 0.400]

0.659

Maternal postpartum depressive symptoms

Maternal problems in reciprocal social behavior

0.380

[0.221, 0.576]

< 0.001

Maternal age at birth

−0.013

[−0.107, 0.093]

0.794

Paternal age at birth

0.010

[−0.079, 0.088]

0.817

Maternal years of education

0.133

[−0.042, 0.322]

0.159

Paternal years of education

−0.041

[−0.169, 0.084]

0.526

Marital status at pregnancy (unmarried)

0.656

[−1.458, 3.754]

0.608

Annual household income

3 - 7.9 million yen

1.265

[0.527, 2.107]

0.255

<3 million yen

−0.649

[−2.317, 0.527]

0.261

Maternal history of depression and/or anxiety disorders (yes)

2.041

[0.802, 3.189]

0.001

Infant gender (male)

0.287

[−0.303, 0.919]

0.358