The common assumption that population sleep duration has declined in the past few
decades has not been supported by recent reviews, which have been limited to self-reported …

OBJECTIVES: Little evidence exists to support the common assertion that adult sleep
duration has declined. We investigated secular trends in sleep duration over the past 40 …

Abstract Study Objective: The trend in sleep duration in the United States population
remains uncertain. Our objective was to examine changes in sleep duration from 1985 to …

Obtaining sufficient sleep of adequate quality is increasingly becoming recognized as an
important domain of healthy behavior. The Institute of Medicine has released two separate …

Objectives: The purposes of this study were to identify age-related changes in objectively
recorded sleep patterns across the human life span in healthy individuals and to clarify …

We aimed to obtain reliable reference charts for sleep duration, estimate the prevalence of
sleep complaints across the lifespan and identify risk indicators of poor sleep. Studies were …

Several studies have suggested that individuals with long or short sleep durations are at
greater risk for adverse outcomes relative to individuals sleeping 7–8 hours a night. The …

Sleep is important for the physical, social and mental well-being of both children and adults.
Over the years, there has been a general presumption that sleep will inevitably decline with …

The purpose of this meta‐analysis was to determine the magnitude of change over the adult
life span in four key sleep characteristics and to explore research design features that may …

Although the function of sleep remains a biological enigma, there is an accumulating mass
of empirical evidence demonstrating that habitually short sleep duration can have adverse …