title: Job strain, Type A behavior pattern, and the prevalence of coronary atherosclerosis in Japanese working men.
abstract: OBJECTIVE
  To examine the relation of type A behavior pattern and job strain to angiographically documented coronary stenosis.
  
  
  METHODS
  Subjects were 197 male Japanese patients with a full-time job. A questionnaire-based interview elicited psychosocial and other factors. Type A behavior pattern was measured by 12 questions, and job strain by the method of Karasek. Significant coronary stenosis was defined when a 75% or greater luminal narrowing occurred at one or more major coronary arteries or when a 50% or greater narrowing occurred at the left main artery. Logistic regression analysis was used to calculate odds ratio (OR) and 95% confidence interval (CI) with adjustment for traditional coronary risk factors and job type.
  
  
  RESULTS
  Type A behavior pattern was related to a statistically non-significant lower prevalence of the coronary stenosis especially in the absence of job strain (adjusted OR 0.6, 95% CI 0.3-1.2). Job strain was non-significantly associated with a modestly increased prevalence of coronary stenosis (OR 1.7, 95% CI 0.6-5.2).
  
  
  CONCLUSIONS
  These findings suggest that both the behavioral pattern and psychosocial work environment may be related to coronary artery stenosis.
authors.affiliation: Department of Preventive Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Yoshimasu
authors.forename: Y
authors.initials: Y
authors.lastname: Liu
authors.forename: H
authors.initials: H
authors.lastname: Kodama
authors.forename: S
authors.initials: S
authors.lastname: Sasazuki
authors.forename: M
authors.initials: M
authors.lastname: Washio
authors.forename: K
authors.initials: K
authors.lastname: Tanaka
authors.forename: S
authors.initials: S
authors.lastname: Tokunaga
authors.forename: S
authors.initials: S
authors.lastname: Kono
authors.forename: H
authors.initials: H
authors.lastname: Arai
authors.forename: S
authors.initials: S
authors.lastname: Koyanagi
authors.forename: K
authors.initials: K
authors.lastname: Hiyamuta
authors.forename: Y
authors.initials: Y
authors.lastname: Doi
authors.forename: T
authors.initials: T
authors.lastname: Kawano
authors.forename: O
authors.initials: O
authors.lastname: Nakagaki
authors.forename: K
authors.initials: K
authors.lastname: Takada
authors.forename: T
authors.initials: T
authors.lastname: Nii
authors.forename: K
authors.initials: K
authors.lastname: Shirai
authors.forename: M
authors.initials: M
authors.lastname: Ideishi
authors.forename: K
authors.initials: K
authors.lastname: Arakawa
authors.forename: M
authors.initials: M
authors.lastname: Mohri
authors.forename: A
authors.initials: A
authors.lastname: Takeshita
mesh_terms: D000328:Adult; D017023:Coronary Angiography; D003324:Coronary Artery Disease / Q000453:epidemiology / Q000523:psychology*; D003430:Cross-Sectional Studies; D006801:Humans; D015994:Incidence; D007564:Japan / Q000453:epidemiology; D007588:Job Satisfaction; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D013315:Stress, Psychological / Q000150:complications*; D014434:Type A Personality