Fig. 8

Path diagram illustrating the mediation analysis of the relationship between sleep time and stroke risk across various years in the age groups. The graphs (A, B) correspond < 60 and ≥ 60 in the 2018 CHARLS database, The graphs (C, D) correspond < 60 and ≥ 60 in the 2020 CHARLS database, each depicting the mediating effects of dyslipidemia