Association of insomnia symptoms and non-restorative sleep with Typus melancholicus: a Japanese general population survey.

This study aimed to investigate the association between insomnia symptoms and non-restorative sleep (NRS) in individuals with Typus melancholicus, a personality trait linked to depression, in the general population. We analyzed data from a Japanese cross-sectional survey of 2519 randomly sampled adults. Typus melancholicus was evaluated using a modified version of Kasahara's Typus melancholicus inventory (modified-KTM).

Stressful events and coping strategies associated with symptoms of depression: A Japanese general population survey.

Background: The following question remains open: what has the strongest impact on symptoms of depression, experiencing multiple stressful events, being exposed to a specific stressful event, or having a maladaptive coping style?

Method: We conducted a cross-sectional survey with face-to-face interviews. Data from 2559 randomly-sampled adults living in Japan were analyzed. The participants were asked about stressful events (12 items) experienced in the previous month and their stress-coping strategies (16 items).

Unhealthy lifestyle factors and depressive symptoms: A Japanese general adult population survey.

Objective: To investigate the relationship between unhealthy lifestyles factors and depressive symptoms among the general adult population in Japan.

Method: Participants were randomly selected from the Japanese general adult population. Data from 2334 people aged 20 years or older were analyzed.

The association between sleep problems and perceived health status: a Japanese nationwide general population survey.

Objective: Sleep problems in humans have been reported to impact seriously on daily function and to have a close association with well-being. To examine the effects of individual sleep problems on physical and mental health, we conducted a nationwide epidemiological survey and examined the associations between sleep problems and perceived health status.

Methods: Cross-sectional surveys with a face-to-face interview were conducted in August and September, 2009, as part of the Nihon University Sleep and Mental Health Epidemiology Project (NUSMEP).

[Management of insomnia and hypersomnia associated with psychiatric disorders].

Most psychiatric disorders, such as schizophrenia, mood disorders, or neurotic disorders are associated with sleep disorders of various kinds, among which insomnia is most prevalent and important in psychiatric practice. Almost all patients suffering from major depression complain of insomnia. Pharmacological treatment of insomnia associated with major depression shortens the duration to achieve remission of depression.

Self-help behaviors for sleep and depression: a Japanese nationwide general population survey.

Objective: The aim of this study was to examine the relationship between self-help behaviors for sleep (SHBS) and depression among the general adult population in Japan.

Methods: The survey was conducted in June 2000 using self-administered questionnaires for subjects living in 300 communities randomly selected throughout Japan. A total of 24,686 responses were analyzed from individuals aged 20 years or older.

[Insomnia associated with psychiatric disorders].

Most psychiatric disorders, such as schizophrenia, mood disorders, or neurotic disorders are associated with sleep disorders of various kinds, among which insomnia is most prevalent and important in psychiatric practice. Almost all patients suffering from major depression complain of insomnia. Pharmacological treatment of insomnia associated with major depression shortens the duration to achieve remission of depression.