Risks of stroke
Table 2 presents the aHRs of stroke after adjusting for covariates.
Stroke risk was significantly higher in the pre-eclampsia/eclampsia
group than in the non-pre-eclampsia/eclampsia group (aHR = 2.05, 95% CI
=1.67-2.52, p < 0.001).
Women with old delivery age had higher risk of stroke than that of women
with young delivery age (Table 2), with highest risk being 2.61
(p < 0.001) for age >35 years, compared to
women with age at delivery <30 years.
From the Cox regression analysis results presented in Table 3,
delivery-related variables, such as cesarean section, multiple
gestation, hospital level, and the season of maternal delivery did not
have significant risk for stroke.
For comorbidities, Hypertension increased risks for stroke with aHR 3.35
(95% CI = 1.99-5.63, p <0.001) in these two matched
cohorts. APH had a significant risk for stroke. Other comorbidities such
as GDM, anemia, and PPH had no significant impact on stroke occurrence.
Socioeconomic variables, such as geographic region and urbanization
level, had no significant stroke risk except family income. Women in
median or high-income families had a higher risk of stroke than that of
women in low-income families.