Anxiety is the most common mental health problem worldwide. Epidemiological studies
show that sleep disturbances, particularly insomnia, affect∼ 50% of individuals with anxiety …

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 …

Objective: To compare the two phases of long COVID, namely ongoing symptomatic COVID-
19 (OSC; signs and symptoms from 4 to 12 weeks from initial infection) and post-COVID-19 …

Stress is associated with the onset and severity of several psychiatric disorders that occur
more frequently in women than men, including posttraumatic stress disorder (PTSD) and …

BACKGROUND: The spectrum of disorders of the brain is large, covering hundreds of
disorders that are listed in either the mental or neurological disorder chapters of the …

Background Actigraphy may provide a more valid assessment of sleep, circadian rhythm
(CR), and physical activity (PA) than self‐reported questionnaires, but has not been used …

The prevalence of depression appears to have increased over the past three decades.
While this may be an artefact of diagnostic practices, it is likely that there are factors about …

Objective: While the implications of social support are increasingly well understood, no meta-
analytic review to date has examined the intersection of the social support and sleep …

Background The chronotype, being a morning or an evening type, can influence an
individual's psychological health. Studies have shown a link between depressed mood 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 …