Skip to main content

Table 1 Characteristics of 45,341 pregnancies according to maternal occupational exposure to ECDs.

From: Parental occupational exposure to endocrine disrupting chemicals and male genital malformations: A study in the danish national birth cohort study

   

Unlikely EDC exposure

(N = 42,474)

Possible/Probably

EDC exposure (N = 2,867)

   

N

%

N

%

Mother

Age (years)

≤ 20

335

0.8

39

1.4

  

20.1-30

21606

50.9

1579

55.1

  

30.1-35

15009

35.4

919

32.1

  

35.1-40

4982

11.7

304

10.6

  

≥ 40.1

525

1.2

26

0.9

 

Pre-pregnancy body mass index (kg/m 2 )

BMI < 20.0

9874

24.0

700

24.5

  

BMI 20.1 -30.0

22566

55.0

1502

52.6

  

BMI > 30.1

8617

21.0

656

23.0

 

Socio-occupational status

High

22105

53.9

954

34.5

  

Medium

15574

38.0

1001

36.2

  

Low

3352

8.2

812

29.3

 

Vegetarian diet

Yes

478

1.3

15

0.6

 

Consuming alcohol during pregnancy

Yes

2310

5.5

156

5.6

 

Binge drinking during pregnancy

Yes

1845

4.4

132

4.7

 

Smoking during pregnancy (cigarettes/day)

0

32944

80.0

2159

77.9

  

≤10

5796

14.1

399

14.4

  

10.1-19.9

1717

4.2

152

5.5

  

≥20

728

1.8

61

2.2

 

History of spontaneous abortions

Yes

7400

18.0

455

16.4

 

Parity

1*

38426

90.5

2641

92.1

  

≥2-3

4048

9.6

226

7.9

 

Oral contraceptives used in the past

Yes

9990

24.3

678

24.5

 

Treated for infertility

Yes

2310

5.5

156

5.6

 

Time to pregnancy

Unplanned

8282

22.8

504

20.8

  

Immediately

1575

4.3

94

3.9

  

1 - 2.9 months

8645

23.8

555

22.9

  

3 - 5.9 months

7113

19.6

473

19.5

  

6 - 12 months

5558

15.3

401

16.6

  

> 12.1 months

5089

14.0

395

16.3

 

Gynecologic diseases

Yes

10598

25.8

650

23.5

Father

Age (years)

≤20

335

0.8

39

1.4

  

20.1-30

21606

50.9

1579

55.1

  

30.1-35

15011

35.4

919

32.1

  

35.1-40

4982

11.7

304

10.6

  

≥ 40.1

526

1.2

26

0.9

 

Smoking habit

No

28000

69.4

1784

65.4

  

Yes - less than daily

1269

3.1

67

2.5

  

Yes - daily

11058

27.4

875

32.1

Boys

Duration of gestation

≤24 weeks

13

0.1

1

0.1

  

24.1-32 weeks

284

0.7

22

0.8

  

32.1 - 37 weeks

1954

4.9

152

5.7

  

≥37.1 weeks

37350

94.3

2510

93.5

 

Birth weight

<2500 g

1303

3.2

91

3.3

  

2500.1-4000 g

30002

72.7

2071

74.4

  

>4000.1 g

9982

24.2

620

22.3

 

Age of Cryptorchidism Diagnosis

0 - 2 months

7

0.8

-

-

  

2.1 - 24 months

204

23.3

10

18.9

  

24.1 - 48 months

328

37.4

23

43.4

  

≥48.1 months

337

38.5

20

37.7

 

Age of Hypospadias Diagnosis

0 - 2 months

-

-

-

-

  

2.1 - 24 months

6

2.8

-

-

  

24.1 - 48 months

8

3.7

-

-

  

≥ 48.1 months

202

93.5

28

100

  1. The Danish National Birth Cohort (1997-2009), (N = 45,341).
  2. Primiparous, including this birth.
  3. Numbers may not add up because of missing data.