Table 1

Prevalence of potential preconceptional risk factors in East and West Berlin *

Potential risk factors

Control group

VLBW

East Berlin n = 166

West Berlin n = 175

East Berlin n = 82

West Berlin n = 84


Obstetric history

previous preterm delivery

4.8

8.0

15.9

14.3

previous fetal loss

36.1

36.0

50.0

53.6

previous induced abortion

21.7

20.6

29.3

31.0

assisted reproduction

1.8

5.7

2.5

8.3

prima para

49.4

51.4

51.2

56.0


Other maternal variables

low net income (< 800 DM/m)

1.2

2.3

7.3

7.1

single mother

16.3

4.6

31.7

20.2

school education

less than 10 years

15.1

25.7

34.1

45.2

10 to 11 years

57.8

37.1

51.2

28.6

at least 12 years

27.1

37.1

13.4

26.2

single-room apartment

9.0

3.4

18.3

10.7

unemployed during pregnancy

19.9

6.9

35.4

16.7

migrant from developing country

7.2

18.3

13.4

26.2

age less than 20 years

5.4

1.7

8.5

4.8

age more than 35 years

6.6

14.9

11.0

19.0

body mass index less than 20

34.5

22.5

31.6

20.0

body mass index more than 30

5.5

4.7

3.8

3.8

smoking during pregnancy

26.5

26.9

40.7

44.0


Paternal variables

unemployment

12.7

9.7

24.7

15.5

school education

less than 10 years

15.3

28.9

30.4

40.7

10 to 11 years

53.4

26.0

48.1

25.9

at least 12 years

31.3

45.1

21.5

33.3


* Values are (valid) percentages of total control and VLBW mothers population in East and West Berlin, respectively.

Grimmer et al. BMC Public Health 2002 2:10   doi:10.1186/1471-2458-2-10

Open Data