Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Mediation analysis. A mediation analysis based on SPSS Model 4, with gender, age, years of education, and APOE4 gene carrier status as covariates.
Abbreviations: ALPS index, The index of diffusivity along the perivascular space; MMSE, Mini-Mental state examination; PQSI, Pittsburgh Sleep Quality Index.
