Table 3 Associations between migration status and risk of ADHD

Overall migration

5

2,875,070

0.84 (0.53, 1.32)

0.452

70.2

0.009

Migration generation

 1st generation

2

2,716,544

0.67 (0.22, 2.06)

0.488

89.2

0.002

 2nd generation

4

2,866,502

0.83 (0.54, 1.28)

0.404

74.3

0.009

Parental country of birth

 Foreign-born mother

2

2,757,509

0.92 (0.88, 0.95)

< 0.001

0.0

0.467

 Foreign-born father

2

2,757,509

1.58 (1.12, 2.23)

0.009

94.5

< 0.001

 Both parents foreign-born

2

2,757,509

1.50 (0.16, 14.10)

0.724

98.9

< 0.001

Migration type ^a

 Africa to Europe

2

2,757,509

1.81 (0.30, 10.94)

0.516

97.3

< 0.001

 Americas to Europe

2

2,757,509

1.26 (1.14, 1.40)

< 0.001

0.0

0.642

 Eastern Mediterranean to Europe

2

2,757,509

1.29 (0.37, 4.50)

0.689

95.7

< 0.001

 Europe to Europe

2

2,757,509

1.16 (0.61, 2.20)

0.650

96.9

< 0.001

 South-East Asia to Europe

2

2,757,509

0.89 (0.29, 2.77)

0.838

91.8

< 0.001

 Western Pacific to Europe

1

2,707,967

0.40 (0.27, 0.61)

< 0.001

96.6

< 0.001

NOS score

  < 7

1

8568

1.25 (0.63, 2.51)

–

–

–

  ≥ 7

4

2,866,502

0.77 (0.46, 1.29)

0.320

73.0

0.011

 Minimal

–

2,825,537

0.68 (0.49, 0.95)

0.024

39.3

0.176

 Maximal

–

2,857,609

0.98 (0.58, 1.68)

0.955

67.3

0.027