Table 2 Disease characteristics of patients registered with a diagnosis of postpartum thyroiditis (O905) in the North Denmark Region from 2016 to 2019.

Patients

40

Type of diagnosis

 Primary diagnosis

7

17.5

 Secondary diagnosis

33

82.5

Time from childbirth to diagnosis

 < 3 months

 < 3

NA

 3–6 months

20

50.0

 6–9 months

10

25.0

 9–12 months

8

20.0

 12–24 months

 < 3

NA

Medical treatment postpartum

 Levothyroxine

22

55.0

 ATD

8

20.0

 None

13

32.5

Course of the disease postpartum^a

 Hyperthyroidism

8

20.5

 Hypothyroidism

16

41.0

 Biphasic^b

15

38.5

Autoantibody positivity postpartum^c

 TPO-Ab^a

29

74.4

 Tg-Ab^a

21

63.6

 TRAb^a

8

20.5