Aims To assess the association of sleep factors (sleep duration, trouble sleeping, sleep
disorder) and combined sleep behaviours with the risk of clinically relevant depression …

Background Evidence of an association between sleep duration and depression was
inconsistent. Methods Adults who participated in the National Health and Nutrition …

Sleep problems are considered a core symptom of depression. However, there is little
information about the comorbidity of sleep problems and depression in low-and middle …

Background The longitudinal relationship between sleep duration, sleep quality, and their
changes with the risk of depressive symptoms is unclear. We examined the association …

Background Results from longitudinal studies on sleep duration and incidence of
depression remain controversial. Methods PubMed and Web of Science updated on October …

Background There are several studies that have focused on the relationship between sleep
duration and depression, however, only a few prospective studies have centered on the …

Sleep duration and sleep quality are often linked to increased risk of mortality and morbidity.
However, national representative data on both sleep duration and sleep quality and their …

Objective: Sleep disturbance is common in psychiatric disorders. However, the relationships
of core parameters in sleep research, such as total sleep time (TST), with depression and …

Objectives To examine (i) the frequency of different sleep complaints (early wake-up, trouble
falling asleep, hypersomnia) and their co-occurrence and (ii) the sociodemographic …

Purpose The reasons for the comorbidity between depressed mood and poor sleep are not
well understood. Method Participants were 5172 adults aged 50 years and older from the …