Health status and lifestyle factors as predictors of depression in middle-aged and elderly Japanese adults: a seven-year follow-up of the Komo-Ise cohort study.

Background: Depression is a common mental disorder. Several studies suggest that lifestyle and health status are associated with depression. However, only a few large-scale longitudinal studies have been conducted on this topic.

Predictive validity of the total health index for all-cause mortality assessed in the Komo-Ise cohort.

Background: The Total Health Index (THI), a self-administered questionnaire developed in Japan, is used for symptom assessment and stress management of employees and others; however, it has not been reported whether it can predict mortality risk.

Methods: The THI, with 12 primary and 5 secondary scales, was applied to a cohort consisting of middle-aged residents in Japan. This study, called the Komo-Ise cohort study, was started in 1993.

[Factors associated with pollinosis in a middle aged population in Gunma, Japan].

Objective: There are several hypotheses for why the prevalence of pollinosis is increasing. The purpose of this study is to assess various factors related to the pollinosis.

Methods: The subjects were 10,898 participants aged between 47 and 77 years old who completed a self-administered questionnaire in 2000, in the second survey of a population-based cohort in Gunma Prefecture, named the Komo-Ise Study.

Perceived health as related to income, socio-economic status, lifestyle, and social support factors in a middle-aged Japanese.

Background: Few studies have examined the association of perceived health with socio-economic status, especially income, and social isolation and support in Japan. The purpose of this study is to clarify the associations among perceived health, lifestyle, and socio-economic status, as well as social isolation and support factors, in middle-aged and elderly Japanese.

Methods: Subjects were 9,650 participants aged 47-77 years who completed a self-administered questionnaire in 2000 in the second survey of a population-based cohort (the Komo-Ise study).

Population study on the prevalence of insomnia and insomnia-related factors among Japanese women.

Background: To identify the effect of certain factors on insomnia in the general population.

Methods: A self-reported questionnaire survey was conducted among 648 Japanese women living in the residential area of a city. Age of participants ranged from 20 to 80 s.

Social networks and mortality based on the Komo-Ise cohort study in Japan.

Background: No prospective studies have examined the association between social networks and all-cause and cause-specific mortality among middle-aged Japanese. The study of varied populations may contribute to clarifying the robustness of the observed effects of social networks and extend their generalizability.

Methods: To clarify the association between social networks and mortality among middle-aged and elderly Japanese, a community-based prospective study, the Komo-Ise Study, was conducted in two areas of Gunma Prefecture, Japan.

Rural-urban differences in sociodemographic, social network and lifestyle factors related to mortality of middle-aged Japanese men from the Komo-Ise cohort study.

To examine rural-urban differences in the relationships of sociodemographic, social network, and lifestyle factors to mortality in middle-aged men, we used the data from a community based prospective cohort study, the Komo-Ise study. The subjects were all men aged 40-69 years living in Komochi Village, the rural group (n=2,295), or the downtown district of Isesaki City, the urban group (n=3,334), as of 1993. They completed a self-administered questionnaire in 1993 and were followed for all-cause deaths until 2000.