Objectives Greater sleep disturbances on average are a risk factor for impaired mental
health. Recent research has shown that more intraindividual variability (ie, inconsistency) in …

Abstract Study Objectives Intraindividual variability (IIV) in sleep may be a risk factor for
disease above the influence of mean sleep. Associations between IIV in sleep and risk for a …

Objective We investigated the factors that predispose or precipitate greater intra-individual
variability (IIV) in sleep. We further examined the potential consequences of IIV to overall …

While 24-h total sleep time (TST) is established as a critical driver of major depression, the
relationships between sleep timing and regularity and mental health remain poorly …

Objective Insomnia identity refers to the conviction that one has insomnia, which can occur
independently of poor sleep. Night-to-night variability in sleep (termed intraindividual …

Objective To explore associations between intraindividual variability (IIV) in sleep patterns
and sleep problems, lifestyle factors, and mental and physical health in individuals with …

Features of an individual's sleep/wake patterns across multiple days are governed by two
dimensions, the mean and the intraindividual variability (IIV). The existing literature focuses …

Abstract Study Objectives Variable daily sleep (ie, higher intraindividual variability; IIV) is
associated with negative health consequences, but potential physiological mechanisms are …

Background: Disturbed sleep and irregular sleep-wake patterns have been associated with
poor outcomes in older adults. Sleep regularity however has not been studied in a sample …

Introduction Prior research has established that sleep disturbances and depression are
associated. However, notable limitations exist across past studies, including the heavy use …