A new study which estimated the lifetime risk of stroke at regional, country, and global level has found that one in four people over age 25 is at risk for stroke during their lifetime.
The study, published in the New England Journal of Medicine, used the Global Burden of Disease (GBD) Study 2016 estimates of stroke incidence and the competing risks of death from any cause other than stroke to calculate the cumulative lifetime risks of first stroke, ischaemic stroke or haemorrhagic stroke among adults 25 years of age or older. Estimates of the lifetime risks in the years 1990 and 2016 were compared.
It estimated that the global lifetime risk of stroke from the age of 25 years onward in 2016 was 24.9 per cent (95% uncertainty interval 23.5-26.2), up from 22.8 per cent in 1990. The risk of ischaemic stroke was 18.3 per cent while the risk of haemorrhagic stroke was 8.2 per cent.
The researchers identified a significant difference in lifetime stroke risk worldwide, with the highest risk in East Asia (38.8%) and Central (31.7%) and Eastern Europe (31.6%), and the lowest risk in sub-Saharan Africa (11.8%).