CC BY-NC-ND 4.0 · Sleep Sci 2024; 17(03): e281-e288
DOI: 10.1055/s-0044-1782168
Original Article

Factors Related to the Sleep Duration of 3-Month-Old Infants

1   Department of Nutrition, School of Public Health, Universidade de São Paulo, São Paulo, SP, Brazil
,
Tamiris Ramos
1   Department of Nutrition, School of Public Health, Universidade de São Paulo, São Paulo, SP, Brazil
,
Natalia Pinheiro Castro
1   Department of Nutrition, School of Public Health, Universidade de São Paulo, São Paulo, SP, Brazil
,
Nicole Richetto
1   Department of Nutrition, School of Public Health, Universidade de São Paulo, São Paulo, SP, Brazil
,
Rossana Verônica López
2   Oncology Translational Research Center, Instituto do Câncer do Estado de São Paulo (ICESP), São Paulo, SP, Brazil
,
Liania Alves Luzia
1   Department of Nutrition, School of Public Health, Universidade de São Paulo, São Paulo, SP, Brazil
,
Patricia Helen Rondó
1   Department of Nutrition, School of Public Health, Universidade de São Paulo, São Paulo, SP, Brazil
› Author Affiliations
Funding Source The present study was supported by Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP; grant number 2015/03333-6). PLS received a master's scholarship from Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); TRS received technical training from FAPESP (grant number 2022/04340-0) and NPC received a postdoctoral scholarship from FAPESP (grant number 2020/15365-8).

Abstract

Objective To identify the factors related to sleep duration in 3-month-old infants.

Materials and Methods From 2021 to 2023, we conducted a cross-sectional study in the city of Araraquara, Brazil, involving 140 mothers and their respective 3-month-old infants. Maternal socioeconomic, demographic, obstetric, and nutritional characteristics, as well as nutritional and morbidity characteristics of the respective infants, were evaluated. Sleep duration was determined by the Brief Infant Sleep Questionnaire (BISQ). Multivariate linear regression analysis was used to assess the associations of maternal, newborn, and infant factors with sleep duration at three months.

Results The nighttime sleep duration of the infants was of 9 hours. There were negative associations between nighttime sleep duration and prone sleep position (p = 0.011), falling asleep between 8:30 pm and 11:00 pm (p = 0.032), falling asleep after 11:00 pm (p < 0.001), respiratory infection (p = 0.011), dermatitis (p = 0.002), and the presence of children under 9 years of age in the household (p = 0.013).

Discussion In the present study, factors such as infant morbidity, the presence of other children in the household, and sleeping habits were associated with a decrease in sleep duration in 3-month-old infants. Therefore, we emphasize the importance of early diagnosis of morbidity in the first months of life and of promoting healthy habits such as regulating the time to go to sleep, providing an adequate sleep environment, and other practices that help improve the quality and duration of sleep.



Publication History

Received: 22 May 2023

Accepted: 05 October 2023

Article published online:
27 June 2024

© 2024. 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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