Fig. 2
From: Headaches during pregnancy and the risk of subsequent stroke
Adjusted hazard ratio of gestational headache in each of the four clinical outcomes: multivariable cox regression analysis*. *Each outcome was adjusted for age, hypertension, diabetes, functional disability, history of headache, gestational hypertension, and gestational diabetes. Compared with the G-HA (-) group as the reference, the G-HA ( +) group had a significant risk increase for any stroke (59%), ischemic stroke (50%), hemorrhagic stroke (63%), and intracerebral hemorrhage (63%). However, there was no statistical difference between the G-HA ( +) group and the G-HA (-) group in the occurrence of subarachnoid hemorrhage