Lifetime risk of stroke in young-aged and middle-aged Chinese population: the Chinese Multi-Provincial Cohort Study

Ying Wang1, Jing Liu, Wei Wang

  • 1Department of Epidemiology, Beijing An Zhen Hospital, Capital Medical University, the Key Laboratory of Remodeling-Related Cardiovascular Diseases, Ministry of Education, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China.

Journal of Hypertension
|August 12, 2016
PubMed

Insights

A new lifetime stroke risk model for Chinese adults shows that optimal blood pressure significantly lowers stroke risk. Maintaining healthy lifestyle choices dramatically reduces the likelihood of stroke, even with minor risk factor elevations.

Area of Science:

  • Cardiovascular epidemiology
  • Public health
  • Stroke prevention

Background:

  • Stroke is a leading cause of premature death in China.
  • Current 10-year cardiovascular disease risk assessments are insufficient for early stroke risk differentiation in younger and middle-aged individuals.

Purpose of the Study:

  • To develop a lifetime stroke risk model and risk charts.
  • To assess stroke risk in the young-aged and middle-aged Chinese population.

Main Methods:

  • Utilized data from the Chinese Multi-Provincial Cohort Study (n=21,953) with 18 years of follow-up.
  • Employed the Modified Kaplan-Meier method to estimate lifetime stroke risk up to age 80.
  • Analyzed lifetime stroke risk based on major risk factors for individuals aged 35-60.

Main Results:

  • Identified 917 first-ever stroke cases.
  • Lifetime stroke risk at ages 35-40 was 18.0% for men and 14.7% for women.
  • Blood pressure was the most significant predictor of lifetime stroke risk.
  • Optimal risk factor management reduced stroke risk 8-10 fold compared to having two or more high-risk factors.

Conclusions:

  • Lifetime stroke risk remains low in young and middle-aged Chinese adults with optimal major risk factors, particularly blood pressure.
  • Even slight elevations in major risk factors substantially increase stroke risk.
  • The developed lifetime risk model offers superior identification of stroke risk compared to traditional 10-year estimations.
Abstract