Table 2 Factors associated with adolescent pregnancy among female indigenous adolescents from the Peruvian central jungle

Age (years)

 10–14

Ref.

Ref.

 15–19

4.33

1.78–10.57

0.001

6.88

2.38–19.86

 < 0.0001

Educational level

 None

14.99

0.59–382.74

0.101

2.17

0.07–63.53

0.652

 Elementary school

5.00

2.11–11.85

 < 0.0001

5.59

1.95–16.06

0.001

 High school

Ref.

Ref.

Socio-economic status

 A–B

Ref.

–

–

–

 C

1.79

0.04–79.42

0.761

–

–

–

 D–E

0.96

0.38–24.17

0.981

–

–

–

Adolescent's mother with a history of adolescent pregnancy

 No

Ref.

–

–

–

 Yes

1.48

0.69–3.19

0.314

–

–

–

Adolescent's father with a history of being an adolescent father

 No

Ref.

–

–

–

 Yes

1.41

0.54–3.67

0.481

–

–

–

Educational level of adolescent’s mother

 None

Ref.

–

–

–

 Elementary school

0.96

0.04–23.48

0.979

–

–

–

 High school

2.50

0.13–48.65

0.544

–

–

–

 Technician/University

8.99

0.44–182.78

0.153

–

–

–

Educational level of adolescent’s father

 None

Ref.

–

–

–

 Elementary school

3.80

0.20–71.71

0.373

–

–

–

 High school

6.96

0.39–125.65

0.189

–

–

–

 Technician/University

24.85

1.21–509.96

0.037

–

–

–

Sexual and reproductive health communication with parents

 No

Ref.

Ref.

 Yes

0.19

0.08–0.46

 < 0.0001

0.17

0.06–0.47

0.001

Family history of adolescent pregnancy

 No

Ref.

–

–

–

 Yes

2.43

0.83–7.14

0.107

–

–

–

Position within siblings

 Yungest

1.16

0.41–3.28

0.779

–

–

–

 Middle

Ref.

–

–

–

 Oldest

0.62

0.24–1.57

0.314

–

–

–

Number of siblings

 1–4

Ref.

Ref.

 5–6

1.60

0.63–4.11

0.325

2.70

0.85–8.61

0.094

 7–12

1.84

0.74–4.56

0.187

2.51

0.81–7.78

0.109