Combined effect of cognitive dysfunction and sleep disturbance on mortality risk: NHANES 2011-2014.

ABSTRACT:

Background

Both cognitive dysfunction and sleep disturbances are individually linked to heightened risks of chronic illnesses and mortality. However, their combined impact on all-cause and cardiovascular mortality remains underexplored.

Methods

This study utilized data from the National Health and Nutrition Examination Survey (NHANES) from 2011 to 2014, focusing on participants aged ≥ 60 years who completed cognitive tests and sleep-related questionnaires. Cognitive function was evaluated using three standardized tests: The Consortium to Establish a Registry for Alzheimer's Disease (CERAD), the Animal Fluency Test, and the Digit Symbol Substitution Test. Participants with global cognitive z-scores below - 1 were classified as having low cognitive function. Sleep disturbance

SUBMITTER: Yeh TS 

PROVIDER: S-EPMC12406422 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature