Table 4 Patient and disease characteristics among patients with an O992B- or O992C-diagnosis.

From: Diagnoses of obstetric and postpartum thyroid disease: a Danish validation study

 

O992B

O992C

pa

n

%

n

%

Patients

50

 

39

  

Ageb

 < 30 years

14

29.2

13

33.3

0.59

 ≥ 30 years

34

70.8

25

66.7

 

Smokingb,c

 Yes

5

10.2

10

26.3

0.049

 No

44

89.8

28

73.7

 

Pre-pregnancy BMIb

 < 25 kg/m2

19

39.6

15

40.5

0.93

 ≥ 25 kg/m2

29

60.4

22

59.5

 

Parity

 Nullipara

24

48.0

19

48.7

0.95

 Multipara

26

52.0

20

51.3

 

Fertility treatment

12

24.0

3

7.7

0.04

Family history of thyroid disease

13

34.2

17

53.1

0.11

Type of diagnosis

 Primary diagnosis

4

8.0

5

12.8

0.45

 Secondary diagnosis

46

92.0

34

87.2

 

Place of diagnosisa

 Department of Gynecology and Obstetrics

46

92.0

35

89.7

0.71

 Department of Endocrinology

4

8.0

4

10.3

 

Diagnosis of thyroid disease

 Hyperthyroidism

 < 3

NA

25

64.1

 < 0.01

 Hypothyroidism

45

90.0

6

15.4

 < 0.01

 None

 < 3

NA

6

15.4

0.62

Onset of thyroid disease prior to pregnancy

47

94.0

23

59.0

 < 0.01

Medical treatment prior to pregnancy

45

90.0

19

48.7

 < 0.01

Onset of thyroid disease during pregnancy

 < 3

NA

10

25.6

 < 0.01

Medical treatment during pregnancyb

45

91.8

15

38.5

 < 0.01

 Levothyroxine

45

91.8

8

20.5

 < 0.01

 ATD

 < 3

NA

8

20.5

 < 0.01

  1. BMI Body mass index, ATD Antithyroid drugs, NA Not applicable.
  2. ap-value is the result of comparison using Chi-square test.
  3. bMissing data not included: Age (n = 3), smoking (n < 3), pre-pregnancy BMI (n = 4), family history of thyroid disease (n = 19), medical treatment during pregnancy (n < 3).
  4. cCurrent or previous smoking.