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CC BY-NC-ND 4.0 · Sleep Sci 2019; 12(04): 272-278
DOI: 10.5935/1984-0063.20190094
ORIGINAL ARTICLE

Sleep duration on a population of children referred to sleep study - cross-sectional data from 2003 to 2009

Cristiane Fumo-dos-Santos
1   Universade Federal de São Paulo, Departamento de Psicobiologia - São Paulo - São Paulo - Brazil.
,
Marcia Pradella-Hallinan
1   Universade Federal de São Paulo, Departamento de Psicobiologia - São Paulo - São Paulo - Brazil.
,
Beatriz Neuhaus Barbisan
2   Universade Federal de São Paulo, Departamento de Pediatria - São Paulo - São Paulo - Brazil.
,
Sergio Tufik
1   Universade Federal de São Paulo, Departamento de Psicobiologia - São Paulo - São Paulo - Brazil.
,
Gustavo Antonio Moreira
1   Universade Federal de São Paulo, Departamento de Psicobiologia - São Paulo - São Paulo - Brazil.
2   Universade Federal de São Paulo, Departamento de Pediatria - São Paulo - São Paulo - Brazil.
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Introduction: Sleep is essential for human beings, especially children. Insufficient sleep is linked to somatic and psychological problems. This study aims to describe nocturnal sleep patterns in children aged 7 to 13 years and investigate if sex or weekdays influence sleep habits. It also analyses factors associated with sleep length and the difference between sleep habits on weekends and weekdays.

Methods: A retrospective cross-sectional study with questionnaires from children with sleep complaints referred to our service (December 2003 to June 2009) in Sao Paulo City, Brazil. Median of sleep hours, time going to bed, waking up, and the difference in amount of sleep during weekends and weekdays were calculated. A generalized linear model was used to find associations between covariates and a) sleep hours, and b) sleep weekend minus - weekdays.

Results: We analyzed 577 children (median 9.5 y, 61% boys). Median bedtime was 22h. Median wake up time was 7h on weekdays and 9h on weekends. Median sleep duration was 9.5h during weekdays and 10h on weekends. The median difference in the amount of sleep during weekends and weekdays was 0.5h (IQR=1.5). Shorter sleep duration was associated with age and school schedule. Higher difference weekend - weekdays was associated with older children, girls, and school schedule.

Conclusion: Children 7 to 13 years usually sleep more on weekends. Age, morning and full-time classes are associated with shorter sleep duration on weekdays and higher weekend-weekdays; girls sleep more during weekends.

Sleep - Child - Habits - School


Publication History

Received: 16 January 2019

Accepted: 30 September 2019

Article published online:
31 October 2023

© 2023. Brazilian Sleep Association. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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