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Lookup NU author(s): Dr Emma SlackORCiD, Natalja Wells-Dean, Dr Helen St Clair-Thompson, Professor Mark PearceORCiD
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
© 2024 The Authors. Objectives: Poor sleep quality has been linked to adverse health outcomes. It is important to understand factors contributing to sleep quality. Previous research has suggested increased cognition and education duration have a protective effect on sleep quality in old age. This study aimed to assess the hypothesis that age-11 intelligence quotient and highest achieved education level are associated with subjective sleep quality at age 60. Methods: Participants are members of the Newcastle Thousand Families Study birth cohort, all born in 1947. Data included a calculated intelligence quotient score based on participant's 11-plus exam results, highest achieved education level, social class at ages 25 and 50 and global Pittsburgh Sleep Quality Index (PSQI) at age 60. Multivariable regression analysis was used to investigate effect sizes of variables on global PSQI, which formed the basis of a path analysis model. Results: After excluding participants with incomplete data, and those who had been diagnosed with sleep apnea, 251 participants were included in the path analysis model. Education level was associated with global PSQI (R = − 0.653; 95% CI − 1.161, − 0.145; P = .012) but age-11 intelligence quotient was not. While a similar association was seen for women in the stratified analysis, no such associations were seen for men. Conclusions: The results of this study show an inverse relationship between education level, but not childhood intelligence quotient, and sleep quality in later life, in women only. Future research is needed to examine the mechanism underlying this relationship.
Author(s): Grebby J, Slack EL, Wells-Dean N, St Clair-Thompson H, Pearce MS
Publication type: Article
Publication status: Published
Journal: Sleep Health
Year: 2024
Volume: 10
Issue: 5
Pages: 594-601
Print publication date: 01/10/2024
Online publication date: 06/08/2024
Acceptance date: 02/07/2024
Date deposited: 19/08/2024
ISSN (print): 2352-7218
ISSN (electronic): 2352-7226
Publisher: Elsevier Inc.
URL: https://doi.org/10.1016/j.sleh.2024.07.002
DOI: 10.1016/j.sleh.2024.07.002
Data Access Statement: The data underlying this article cannot be shared publicly due to the need to protect the privacy of the individuals who participated in the study.
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