Table 2 Logistic regression analyses with a binary response (becoming a father < 22 years or not)

Age of the boy’s mother

Old

2225

4.6

Young

151

8.1

1.8 (1.2–2.8)

0.005

1.0 (0.6–1.9)

0.940

Age of the boy’s father

Old

2269

4.8

Young

149

11.4

2.6 (1.5–4.4)

<0.001

2.0 (0.98–4.2)

0.059

1.9 (1.1–3.4)

0.029

Educational level of the boy’s mother

High

760

2.4

Low

1789

6.2

2.7 (1.6–4.5)

<0.001

1.9 (1.1–3.4)

0.024

2.2 (1.3–3.8)

0.003

Educational level of the boy’s father

High

509

2.6

Low

1833

5.9

2.4 (1.3–4.3)

0.003

1.6 (0.8–3.0)

0.187

Family structure

Intact

2182

5.0

Non-intact

436

5.3

1.1 (0.7–1.7)

0.776

School performance

Average or above

2241

4.9

Below average

425

7.1

1.5 (0.98–2.3)

0.064

0.9 (0.5–1.5)

0.734

Parent and teacher report of psychopathology (SD)

Conduct problems (3.0)

2604

-

1.5 (1.3–1.7)

<0.001

1.4 (1.1–1.8)

0.004

1.4 (1.2–1.6)

<0.001

Hyperactivity (2.4)

2587

-

1.3 (1.1–1.5)

<0.001

1.0 (0.8–1.2)

0.810

Emotional problems (1.9)

2597

-

0.9 (0.8–1.1)

0.366

Child report of psychopathology

CDI total score (5.9)

2651

-

1.3 (1.1–1.5)

<0.001

1.2 (1.004–1.4)

0.045

1.2 (0.99–1.4)

0.067

Police register information*

No criminal offenses

2101

4.3

-

1-2 offenses

401

7.5

1.8 (1.2–2.7)

0.008

-

1.3 (0.8–2.1)

0.296

3-5 offenses

108

5.6

1.3 (0.6–3.0)

0.546

-

0.7 (0.2–1.9)

0.425

>5 offenses

111

14.4

3.7 (2.1–6.6)

<0.001

-

2.6 (1.3–5.2)

0.008