Knowledge Tree
Home Research Docs About
Wave 1 ↔ sleep duration

Relations (1)

cross_type 3.17 — strongly supporting 8 facts

Sleep duration is related to Wave 1 as it serves as the baseline measurement period for assessing sleep patterns and their subsequent impact on cognitive scores, as evidenced by the study analysis in [1], [2], and [3].

Facts (8)

Sources
Improvement in sleep duration was associated with higher cognitive ... aging-us.com Aging 8 facts
claimAmong participants who were moderate sleepers (6-8 hours) at baseline (Wave 1), increasing or decreasing sleep duration by 2 or more hours by Wave 2 was associated with lower global cognition scores compared to participants who did not change their sleep duration.
measurementIn a study of participants who slept 7 hours or more in Wave 1, higher sleep duration was associated with lower scores in global cognition (β=-0.47, P<0.001 for model 1; β=-0.28, P<0.001 for model 2) and on all three cognitive tests.
claimFor participants identified as short sleepers (sleeping <6 hours) in Wave 1, a change in sleep duration of 2 or more hours in Wave 2 or Wave 3 was associated with lower global cognition scores.
measurementIn the CHARLS study, 15,700 participants had data on sleep duration and cognitive tests in 2011 (Wave 1), from which 104 individuals under 45 years old and 380 individuals with a history of brain damage or mental retardation were excluded.
claimThe study titled 'Improvement in sleep duration was associated with higher cognitive...' identified an inverted-U shaped association between sleep duration and global cognition scores in Wave 1, as visualized by generalized additive models.
claimIn the study analysis of changes from Wave 1 to Wave 3, changes in sleep duration were associated with global cognition scores, with the association remaining significant for episodic memory and TICS tests in models 2 and 3, but not for the figure-drawing test.
measurementIn a study of participants who slept 7 hours or less in Wave 1, shorter sleep duration was associated with lower scores in global cognition (β=0.48, P<0.001 for model 1; β=0.28, P<0.001 for model 2) and on all three cognitive tests.
claimFor participants identified as long sleepers in Wave 1, changes in sleep duration had no significant effect on global cognition scores.