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Table 1 Characteristics of study population by mother's region of origin (in %), 2004-2007, (N = 2,623,064)

From: Stillbirth differences according to regions of origin: an analysis of the German perinatal database, 2004-2007

 

Germany

   Middle and Northern Europe,

   Mediterranean

   Eastern Europe

   Middle East,

   Asia

   p value*

  

North America

  

   North Africa

  

Number of births

2,166,005

   37,854

   85,874

   138,217

   164,341

   30,773

 

Single status

       

   No

76.7

   83.6

   86.1

   85.4

   90.1

   83.9

   < 0.0001

   Yes

14.9

   9.0

   6.8

   8.4

   4.0

   8.5

 

   Missing

8.4

   7.4

   7.0

   6.1

   5.9

   7.5

 

Social status

       

   Low

31.8

   45.4

   59.8

   56.1

   71.4

   62.0

   < 0.0001

   Middle

37.8

   24.1

   16.3

   21.6

   9.6

   13.4

 

   High

13.5

   12.4

   4.4

   5.2

   2.2

   4.4

 

   Missing

16.9

   18.1

   19.6

   17.1

   16.8

   20.3

 

Maternal age (years)

       

   < 18

0.7

   0.3

   0.6

   0.5

   0.3

   0.2

   < 0.0001

   18-29

43.4

   42.3

   55.8

   60.6

   59.2

   45.0

 

   30-34

31.2

   32.3

   28.2

   26.2

   25.8

   30.8

 

   35-39

20.3

   20.3

   12.7

   10.4

   11.8

   19.4

 

   ≥ 40

4.4

   4.8

   2.6

   2.4

   2.8

   4.7

 

Maternal smoking (during pregnancy)

       

   No

72.9

   72.7

   67.7

   71.0

   73.3

   79.3

   < 0.0001

   Yes

10.9

   6.2

   11.2

   7.3

   9.2

   1.8

 

   Missing

16.2

   21.1

   21.2

   21.7

   17.4

   18.9

 

Parity

       

   0

42.5

   35.9

   32.9

   35.7

   29.3

   36.0

   < 0.0001

   1

32.1

   33.4

   32.0

   32.1

   29.4

   33.7

 

   ≥ 2

25.4

   30.7

   35.0

   32.2

   41.3

   30.3

 

Multiple births

       

   Singletons

96.6

   96.7

   96.9

   97.3

   97.0

   97.8

   < 0.0001

   Twins or more

3.4

   3.3

   3.1

   2.7

   3.0

   2.2

 

Gestational age (weeks) & birth weight (g)

       

   < 37 & < 2500

4.5

   4.1

   4.1

   3.8

   4.3

   4.2

   < 0.0001

   ≥ 37 & < 2500

2.7

   2.3

   2.6

   2.0

   2.6

   2.9

 

   < 37 & ≥ 2500

1.7

   1.6

   1.5

   1.6

   1.6

   1.5

 

   ≥ 37 & ≥ 2500

91.1

   92.0

   91.7

   92.6

   91.5

   91.4

 

Number of antenatal visits

       

   0-04

1.4

   2.6

   2.8

   3.1

   2.2

   3.3

   < 0.0001

   5-07

4.3

   6.9

   7.9

   7.8

   7.8

   9.0

 

   8-11

43.1

   42.3

   47.2

   47.0

   50.0

   49.4

 

   ≥ 12

43.1

   37.9

   33.0

   34.7

   32.9

   29.4

 

   Missing

8.1

   10.3

   9.2

   7.4

   7.2

   8.9

 

First antenatal visit (gestational week)

       

   < 9.

46.5

   40.3

   42.2

   39.7

   44.9

   35.8

   < 0.0001

   9.-12.

37.5

   34.7

   35.6

   36.9

   36.0

   38.0

 

   13.-16.

5.7

   7.7

   7.7

   8.8

   7.6

   9.5

 

   ≥ 17.

3.1

   8.0

   5.9

   8.2

   5.0

   9.3

 

   Missing

7.2

   9.3

   8.6

   6.4

   6.5

   7.4

 

Congenital anomalies

       

   No

99.0

   98.9

   98.8

   98.9

   99.0

   99.0

   < 0.001

   Yes

1.0

   1.1

   1.2

   1.1

   1.0

   1.0

 
  1. * p value for a chi-square test
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