Kazunori Kayaba

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The distribution of serum C-reactive protein (CRP) levels and their association with age, sex, and atherosclerotic risk factors were studied in a large Japanese population between 1992 and 1995. The subjects consisted of 2,275 males and 3,832 females aged 30 years and over. CRP was measured by nephelometry. The distribution of CRP was highly skewed toward a(More)
BACKGROUND No prospective studies have examined the association between occupational stress according to the job demand-control model and the risk of stroke in Asian populations. METHODS We conducted a multicenter community-based prospective study of 6553 Japanese male and female workers. Occupational stress was evaluated using a Japanese version of the(More)
Associations between job characteristics defined by the Karasek's job demand-control model and health behaviors were investigated in a cross-sectional analysis of 6,759 Japanese rural workers. High psychological demands were associated with heavy smoking, exaggerated prevalence of alcohol drinking, and high work-related physical activity. Low job control(More)
We investigated the frequency of the factor VII Gln353 (FVII Gln353) allele in Japan, where coronary artery disease is much less common and factor VII coagulant activity (FVIIc) is lower than in Western countries. Japanese males (n = 144) aged 40-59 years living in 2 different districts were studied, and the FVIIc and activated factor VII (FVIIa) levels(More)
OBJECTIVES This study compared the separate effects produced by two complementary stress models--the job demand-control model and the effort-reward imbalance model--on depression among employees threatened by job loss. METHODS A cross-sectional analysis was conducted to examine these associations among 190 male and female employees who responded to a(More)
BACKGROUND Although sleep is one of the most important health-related factors, relationship between sleep duration and mortality has not been fully discussed. METHODS Study subjects were 11,325 participants (4,419 males and 6,906 females) in the Jichi Medical School Cohort Study, a population-based prospective study. Baseline data were obtained by(More)
OBJECTIVES To explore the association between the prevalence of hypertension in a Japanese working population and job strain (a combination of low control over work and high psychological demands), and to estimate this association in different sociodemographic strata. METHODS From a multicentre community based cohort study of Japanese people, sex specific(More)
The aims of the present study were to analyze the association between incident stroke, occupational class and stress and to examine whether the association is found in both men and women in a prospective study of Japanese male and female workers. A total of 3190 male and 3363 female Japanese community-dwelling workers aged 65 or under with no history of(More)
BACKGROUND Although sleep is one of the most important health-related factors, the relationship between sleep duration and the incidence of cardiovascular events has not been fully described. METHODS The present study comprised the 11,367 study subjects (4413 men and 6954 women) of the Jichi Medical School Cohort Study, a population-based prospective(More)
BACKGROUND The last nationwide survey of Kawasaki disease in Japan was conducted in 2003; the epidemiologic features of the disease in Japan since then are unknown. METHODS All the hospitals with a pediatric department and a bed capacity of > or =100, or hospitals having a bed capacity of <100 but specializing in pediatrics in Japan were asked to report(More)