Table 2 Incidence rate. No restriction for follow-up duration

  Non-Hashimoto’s thyroiditis

315,020

258 (0.08)

1,512,453

17.06

Ref.

< 0.001

0.849

  Hashimoto’s thyroiditis

15,751

86 (0.55)

73,793

116.54

6.83 (5.35–8.72)

< 0.001

  Non-Hashimoto’s thyroiditis

315,020

254 (0.08)

1,512,465

16.79

Ref.

< 0.001

0.790

  Hashimoto’s thyroiditis

15,751

85 (0.54)

73,795

115.18

6.86 (5.37–8.77)

< 0.001

  Non-Hashimoto’s thyroiditis

315,020

198 (0.06)

1,512,698

13.09

Ref.

< 0.001

0.249

  Hashimoto’s thyroiditis

15,751

71 (0.45)

73,835

96.16

7.35 (5.60–9.63)

< 0.001

  Non-Hashimoto’s thyroiditis

313,366

228 (0.07)

1,504,643

15.15

Ref.

< 0.001

0.253

  Hashimoto’s thyroiditis

15,201

60 (0.39)

71,563

83.84

5.53 (4.16–7.35)

< 0.001

  Non-Hashimoto’s thyroiditis

31,024

40 (0.13)

149,219

26.81

Ref.

< 0.001

0.999

  Hashimoto’s thyroiditis

15,512

70 (0.45)

72,894

96.03

3.58 (2.43–5.28)

< 0.001

  Non-Hashimoto’s thyroiditis

31,024

38 (0.12)

149,227

25.46

Ref.

< 0.001

0.922

  Hashimoto’s thyroiditis

15,512

70 (0.45)

72,894

96.03

3.77 (2.54–5.60)

< 0.001

  Non-Hashimoto’s thyroiditis

31,024

23 (0.07)

149,267

15.41

Ref.

< 0.001

0.194

  Hashimoto’s thyroiditis

15,512

59 (0.38)

72,926

80.90

5.25 (3.24–8.50)

< 0.001

  Non-Hashimoto’s thyroiditis

30,501

28 (0.09)

146,799

19.07

Ref.

< 0.001

0.832

  Hashimoto’s thyroiditis

15,180

58 (0.38)

71,496

81.12

4.25 (2.71–6.68)

< 0.001