measurement
The CHARLS study categorized self-reported sleep duration into 7 groups: ≤4, 5, 6, 7, 8, 9, and ≥10 hours per evening.
Authors
Sources
- Associations Between Sleep Duration and Cognitive Function ... humanfactors.jmir.org via serper
The CHARLS study categorized self-reported sleep duration into 7 groups: ≤4, 5, 6, 7, 8, 9, and ≥10 hours per evening.