Trajectories of reported sleep duration associate with early childhood cognitive development

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Article
Citation
Cai, S., Tham, E. K. H., Xu, H.-Y., Fu, X., Goh, R. S. M., Gluckman, P. D., Chong, Y.-S., Yap, F., Shek, L. P., Teoh, O. H., Gooley, J. J., Goh, D. Y.-T., Meaney, M. J., Schneider, N., Rifkin-Graboi, A., & Broekman, B. F. P. (2022). Trajectories of reported sleep duration associate with early childhood cognitive development. Sleep. Advance online publication. https://doi.org/10.1093/sleep/zsac264
Author
Cai, Shirong
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Tham, Elaine Kwang Hsia
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Xu, Hai-Yan
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Fu, Xiuju
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Goh, Rick Siow Mong
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Gluckman, Peter D.
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Chong, Yap Seng
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Yap, Fabian
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Shek, Lynette Pei-Chi
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Teoh, Oon Hoe
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Gooley, Joshua J.
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Goh, Daniel Yam-Thiam
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Meaney, Michael J.
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Schneider, Nora
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Rifkin-Graboi, Anne 
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Broekman, Birit F. P.
Abstract
Study Objectives Examine how different trajectories of reported sleep duration associate with early childhood cognition. Methods Caregiver-reported sleep duration data (n = 330) were collected using the Brief Infant Sleep Questionnaire at 3, 6, 9, 12, 18, and 24 months and Children’s Sleep Habits Questionnaire at 54 months. Multiple group-based day-, night-, and/or total sleep trajectories were derived—each differing in duration and variability. Bayley Scales of Infant and Toddler Development-III (Bayley-III) and the Kaufman Brief Intelligence Test- 2 (KBIT-2) were used to assess cognition at 24 and 54 months, respectively. Results Compared to short variable night sleep trajectory, long consistent night sleep trajectory was associated with higher scores on Bayley-III (cognition and language), while moderate/long consistent night sleep trajectories were associated with higher KBIT-2 (verbal and composite) scores. Children with a long consistent total sleep trajectory had higher Bayley-III (cognition and expressive language) and KBIT-2 (verbal and composite) scores compared to children with a short variable total sleep trajectory. Moderate consistent total sleep trajectory was associated with higher Bayley-III language and KBIT-2 verbal scores relative to the short variable total trajectory. Children with a long variable day sleep had lower Bayley-III (cognition and fine motor) and KBIT-2 (verbal and composite) scores compared to children with a short consistent day sleep trajectory. Conclusions Longer and more consistent night- and total sleep trajectories, and a short day sleep trajectory in early childhood were associated with better cognition at 2 and 4.5 years.
Keywords
Date Issued
2022
Publisher
Oxford University Press
Journal
Sleep
DOI
10.1093/sleep/zsac264
Grant ID
NMRC/TCR/004-NUS/2008
NMRC/TCR/012-NUHS/2014
Funding Agency
National Research Foundation, Singapore
Singapore Institute for Clinical Sciences, Agency for Science Technology and Research (A*STAR)
Nestec Ltd.