Table 2 Incidence rates and hazard ratios for stroke among migraine and control groups

Migraine and control group (n = 226,230)

 Migraine

4,216 / 45,246 (9.3)

411,173

10.25

2.61 (2.30 to 2.92)

1.34 (1.30–1.39)

< 0.001^*

1.35 (1.31–1.39)

< 0.001^*

 Control

12,549 / 180,984 (6.9)

1,642,298

7.64

1

1

Migraine with aura and control group (n = 16,815)

 Migraine with aura

352 / 3,363 (10.5)

33,193

10.60

3.89 (2.85 to 4.93)

1.58 (1.40–1.79)

< 0.001^*

1.38 (1.29–1.48)

< 0.001^*

 Control

898 / 13,452 (6.7)

133,709

6.72

1

1

Migraine without aura and control group (n = 209,414)

 Migraine without aura

3,864 / 41,883 (9.2)

377,967

10.22

2.50 (2.18 to 2.82)

1.32 (1.28–1.37)

< 0.001^*

1.28 (1.24–1.32)

< 0.001^*

 Control

11,651 / 167,532 (7.0)

1,508,589

7.72

1

1