Dataset Information

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

ABSTRACT:

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.

SUBMITTER: Hublin C

PROVIDER: S-EPMC7487757 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

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Publications

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

Hublin Christer C Haasio Lassi L Kaprio Jaakko J

BMC public health 20200909 1

<h4>Background</h4>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.<h4>Methods</h4>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, 7 ...[more]

PMID: 32907578

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Dataset Information

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

Background

Methods

Results

Conclusions

Publications

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

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