The impact of cold spells and heat waves frequencies on the prevalence and incidence of stroke in middle-to-elderly age population in China: evidence from the China Health and Retirement Longitudinal Study (CHARLS).

Stroke, a key cardiovascular disease, is impacted by cold spells and heat waves. However, limited sample size and unclear impact on the aging population's prevalence and incidence remain concerns. We aim to explore the association between cold spells and heat waves frequency and stroke in middle-aged and elderly people in China.