Table 2 Temporal trends in migraine incidence rate among women of childbearing age in China 1990–2019^a

ASIR

Overall

Period1

1990–1996

-0.02

(-0.05, -0.00)

0.05

Period2

1996–2000

-0.35

(-0.42, -0.29)

 < 0.001

Period3

2000–2005

1.03

(0.99, 1.07)

 < 0.001

0.18

(0.17, 0.20)

 < 0.001

Period4

2005–2017

-0.03

(-0.04, -0.02)

 < 0.001

Period5

2017–2019

1.06

(0.93, 1.20)

 < 0.001

CIR

Period1

1990–1995

-0.13

(-0.17, -0.08)

 < 0.001

Period2

1995–2000

-0.47

(-0.52, -0.41)

 < 0.001

Overall

Period3

2000–2005

1.04

(0.98, 1.09)

 < 0.001

Period4

2005–2012

-0.27

(-0.30, -0.24)

 < 0.001

0.06

(0.04, 0.08)

 < 0.001

Period5

2012–2017

-0.01

(-0.07, 0.05)

0.71

Period6

2017–2019

0.79

(0.62, 0.97)

 < 0.001

Period1

1990–1996

-0.04

(-0.11, 0.03)

0.25

Period2

1996–2000

-0.77

(-0.97, -0.56)

 < 0.001

15–19 years

Period3

2000–2004

1.25

(1.05, 1.46)

 < 0.001

0.24

(0.19, 0.28)

 < 0.001

Period4

2004–2017

-0.05

(-0.08, -0.03)

 < 0.001

Period5

2017–2019

2.98

(2.56, 3.40)

 < 0.001

Period1

1990–1996

-0.05

(-0.08, -0.02)

0.01

Period2

1996–2000

-0.73

(-0.82, -0.65)

 < 0.001

20–24 years

Period3

2000–2005

0.88

(0.83, 0.94)

 < 0.001

0.13

(0.12, 0.15)

 < 0.001

Period4

2005–2017

0.02

(0.004, 0.03)

0.01

Period5

2017–2019

1.25

(1.08, 1.44)

 < 0.001

Period1

1990–1996

-0.02

(-0.03, -0.004)

0.02

Period2

1996–2000

-0.19

(-0.23, -0.15)

 < 0.001

25–29 years

Period3

2000–2005

0.92

(0.89, 0.94)

 < 0.001

Period4

2005–2009

-0.26

(-0.30, -0.22)

 < 0.001

0.15

(0.14, 0.16)

 < 0.001

Period5

2009–2017

-0.02

(-0.03, -0.01)

0.001

Period6

2017–2019

0.97

(0.89, 1.05)

 < 0.001

Period1

1900–1996

-0.02

(-0.04, -0.01)

0.01

Period2

1996–2000

-0.25

(-0.29, -0.20)

 < 0.001

30–34 years

Period3

2000–2005

1.08

(1.05, 1.11)

 < 0.001

Period4

2005–2009

-0.37

(-0.42, -0.33)

 < 0.001

0.14

(0.13, 0.15)

 < 0.001

Period5

2009–2017

-0.02

(-0.03, -0.01)

0.01

Period6

2017–2019

0.77

(0.67, 0.87)

 < 0.001

Period1

1990–1996

0.001

(-0.01, 0.02)

0.94

Period2

1996–2000

-0.27

(-0.31, -0.23)

 < 0.001

35–39 years

Period3

2000–2005

1.04

(1.01, 1.06)

 < 0.001

0.18

(0.17, 0.19)

 < 0.001

Period4

2005–2009

0.29

(0.25, 0.33)

 < 0.001

Period5

2009–2019

0.01

(-0.001, 0.01)

0.1

Period1

1990–1998

0.01

(-0.02, 0.03)

0.58

Period2

1998–2001

0.26

(0.07, 0.45)

0.01

40–44 years

Period3

2001–2004

1.43

(1.24, 1.62)

 < 0.001

0.25

(0.22, 0.28)

 < 0.001

Period4

2004–2008

0.44

(0.35, 0.54)

 < 0.001

Period5

2008–2019

0.03

(0.02, 0.04)

 < 0.001

Period1

1990–2001

-0.01

(-0.04, 0.02)

0.34

45–49 years

Period2

2001–2004

2.2

(1.74, 2.66)

 < 0.001

0.21

(0.16, 0.25)

 < 0.001

Period3

2004–2019

-0.03

(-0.05, -0.01)

0.01