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Changes in self-reported sleep duration with age - a 36-year longitudinal study of Finnish adults

BACKGROUND: Sleep deprivation is often claimed to be increasingly common, but most studies show small changes in sleep duration over the last decades. Our aim was to analyze long-term patterns in self-reported sleep duration in a population-based cohort. METHODS: Members of the Older Finnish Twin Co...

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Autores principales: Hublin, Christer, Haasio, Lassi, Kaprio, Jaakko
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7487757/
https://www.ncbi.nlm.nih.gov/pubmed/32907578
http://dx.doi.org/10.1186/s12889-020-09376-z
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author Hublin, Christer
Haasio, Lassi
Kaprio, Jaakko
author_facet Hublin, Christer
Haasio, Lassi
Kaprio, Jaakko
author_sort Hublin, Christer
collection PubMed
description BACKGROUND: Sleep deprivation is often claimed to be increasingly common, but most studies show small changes in sleep duration over the last decades. Our aim was to analyze long-term patterns in self-reported sleep duration in a population-based cohort. METHODS: Members of the Older Finnish Twin Cohort have responded to questionnaires in 1975 (N = 30,915 individuals, response rate 89%, mean age 36 years), 1981 (24,535, 84%, 41 years), 1990 (12,450, 77%, 44 years), and 2011 (8334, 72%, 60 years). Weibull regression models were used to model the effects of follow-up time and age simultaneously. RESULTS: Sleep duration has decreased in all adult age groups and in both genders. The mean duration was in men 7.57 h in 1975 and 7.39 in 2011, and in women 7.69 and 7.37, respectively. The decrease was about 0.5 min in men and 0.9 in women per year of follow-up. In the age-group 18–34 years, mean sleep length was 7.69 h in 1975 and 7.53 in 1990. Among 35–54-year-old it was 7.57 h in 1975 and 7.34 in 2011, and in the age group of 55+ year olds 7.52 and 7.38, correspondingly. The change was largest in middle-aged group: about 23 min or about 0.6 min per year of follow-up. CONCLUSIONS: There has been a slight decrease in mean sleep duration during the 36-year follow-up. Although the sleep duration was longer in 1970s and 1980s, the probable main cause for the change in this study population is the effect of aging.
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spelling pubmed-74877572020-09-16 Changes in self-reported sleep duration with age - a 36-year longitudinal study of Finnish adults Hublin, Christer Haasio, Lassi Kaprio, Jaakko BMC Public Health Research Article BACKGROUND: Sleep deprivation is often claimed to be increasingly common, but most studies show small changes in sleep duration over the last decades. Our aim was to analyze long-term patterns in self-reported sleep duration in a population-based cohort. METHODS: Members of the Older Finnish Twin Cohort have responded to questionnaires in 1975 (N = 30,915 individuals, response rate 89%, mean age 36 years), 1981 (24,535, 84%, 41 years), 1990 (12,450, 77%, 44 years), and 2011 (8334, 72%, 60 years). Weibull regression models were used to model the effects of follow-up time and age simultaneously. RESULTS: Sleep duration has decreased in all adult age groups and in both genders. The mean duration was in men 7.57 h in 1975 and 7.39 in 2011, and in women 7.69 and 7.37, respectively. The decrease was about 0.5 min in men and 0.9 in women per year of follow-up. In the age-group 18–34 years, mean sleep length was 7.69 h in 1975 and 7.53 in 1990. Among 35–54-year-old it was 7.57 h in 1975 and 7.34 in 2011, and in the age group of 55+ year olds 7.52 and 7.38, correspondingly. The change was largest in middle-aged group: about 23 min or about 0.6 min per year of follow-up. CONCLUSIONS: There has been a slight decrease in mean sleep duration during the 36-year follow-up. Although the sleep duration was longer in 1970s and 1980s, the probable main cause for the change in this study population is the effect of aging. BioMed Central 2020-09-09 /pmc/articles/PMC7487757/ /pubmed/32907578 http://dx.doi.org/10.1186/s12889-020-09376-z Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Research Article
Hublin, Christer
Haasio, Lassi
Kaprio, Jaakko
Changes in self-reported sleep duration with age - a 36-year longitudinal study of Finnish adults
title Changes in self-reported sleep duration with age - a 36-year longitudinal study of Finnish adults
title_full Changes in self-reported sleep duration with age - a 36-year longitudinal study of Finnish adults
title_fullStr Changes in self-reported sleep duration with age - a 36-year longitudinal study of Finnish adults
title_full_unstemmed Changes in self-reported sleep duration with age - a 36-year longitudinal study of Finnish adults
title_short Changes in self-reported sleep duration with age - a 36-year longitudinal study of Finnish adults
title_sort changes in self-reported sleep duration with age - a 36-year longitudinal study of finnish adults
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7487757/
https://www.ncbi.nlm.nih.gov/pubmed/32907578
http://dx.doi.org/10.1186/s12889-020-09376-z
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