Objective Insomnia is a prevalent disorder in the United States and elsewhere. It has been
associated with a range of somatic and psychiatric conditions, and adversely affects quality …

Introduction Insomnia is recognized as a public health issue. The objectives of this study
were to characterize and compare the prevalence of insomnia symptoms in the Canadian …

This study estimates the prevalence of nighttime insomnia symptoms among Canadians
aged 6 to 79, and examines trends over time (2007 to 2015). The study is based on 21,826 …

Introduction: Despite the high prevalence of insomnia, there is little information about its
incidence and risk factors. This study estimated the incidence of insomnia and examined …

Objectives This study examined the national age-and sex-specific prevalence rates of
insomnia and excessive daytime sleepiness (EDS), the associations of insomnia symptoms …

Although excessive daytime sleepiness is commonly evaluated in clinical and research
settings using the Epworth Sleepiness Scale, few studies have assessed the factors …

Introduction Estimating insomnia prevalence in epidemiological studies is hampered by
variability in definitions and interpretation of criteria. We addressed the absence of a …

Importance Insomnia is a significant public health problem, but there is little information on
its natural history. Objective To assess the incidence, persistence, and remission rates of …

This article summarizes epidemiologic evidence on insomnia, including the prevalence,
incidence, and risk factors, as well as its course and consequences. Approximately 10% of …

Objective: To estimate the incidence, chronicity, and remission of symptoms of insomnia and
to examine factors associated with the incidence and chronicity of insomnia among …