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Table 1 Maternal Risk Factors in study groups I-III compared with the reference group

From: Does unemployment in family affect pregnancy outcome in conditions of high quality maternity care?

Risk factor

Reference

(n = 18963) %

I Mother unemployed

(n = 3388) %

P

II Father unemployed

(n = 1551) %

P

III Both parents unemployed

(n = 1037) %

P

Age < 18 years

0.4

1.3

0.001

1.81

0.001

2.51

0.001

Age > 35 years

12.9

7.9

0.001

8.90

0.001

5.79

0.001

Unmarried

27.4

43.1

0.001

45.0

0.001

58.0

0.001

Primiparity

40.3

41.7

0.12

45.8

0.001

49.8

0.001

Previous miscarriage

17.2

17.2

0.92

14.8

0.015

13.8

0.005

Prior termination

9.3

12.5

0.001

13.0

0.001

15.4

0.001

7 deliveries

0.5

0.06

0.001

0.4

0.59

0

0.01

IUD before pregnancy

9.02

7.29

0.001

6.25

0.001

6.56

0.006

Surgically scarred uterus

10.6

10.8

0.75

10.1

0.54

7.8

0.004

Second pregnancy in 12 months

6.9

7.5

0.24

8.6

0.014

8.3

0.089

Previous delivery > 6 y

9.7

9.1

0.30

8.1

0.040

8.8

0.35

Prior fetal demise

2.1

1.9

0.51

1.9

0.67

3.2

0.018

Low weight gain

6.8

9.1

0.001

7.6

0.34

9.0

0.02

Overweight

23.7

25.7

0.01

24.4

0.51

26.3

0.053

Smoking

4.2

9.5

0.001

10.4

0.001

17.9

0.001

Alcohol consumption

3.2

4.5

0.001

3.4

0.76

2.7

0.36

Chronical illness

5.7

6.2

0.26

5.5

0.83

6.3

0.42

Diabetes

2.0

2.8

0.003

2.2

0.58

2.9

0.044

Pregravid hypertension

1.9

2.2

0.24

2.0

0.69

2.1

0.54

  1. IUD = intrauterine device