title: A cross-sectional study of workplace social capital and blood pressure: a multilevel analysis at Japanese manufacturing companies.
abstract: OBJECTIVE
  We examined the contextual effect of workplace social capital on systolic blood pressure (SBP).
  
  
  METHODS
  Cross-sectional.
  
  
  METHODS
  A conglomerate from 58 workplaces in Japan.
  
  
  METHODS
  Of the 5844 workers at a Japanese conglomerate from 58 workplaces, 5368 were recruited. Individuals who received drugs for hypertension (n=531) and who lacked information on any variable (n=167) were excluded from the analyses, leaving 4735 individuals (3281 men and 1454 women) for inclusion.
  
  
  METHODS
  Systolic blood pressure.
  
  
  RESULTS
  The contextual effect of workplace social capital on SBP was examined using a multilevel regression analysis with a random intercept. Coworker support had a contextual effect at the workplace level (coefficient=-1.97, p=0.043), while a lack of trust for coworkers (coefficient=0.27, p=0.039) and lack of helpfulness from coworkers were associated with SBP (coefficient=0.28, p=0.002).
  
  
  CONCLUSIONS
  The present study suggested that social capital at the workplace level has beneficial effects on SBP.
authors: Department of Preventive Medicine and Community Health,  University of Occupational and Environmental Health, Kitakyushu,  Japan.
authors: Yoshihisa
authors: Y
authors: Fujino
authors: Tatsuhiko
authors: T
authors: Kubo
authors: Masamizu
authors: M
authors: Kunimoto
authors: Hidetoshi
authors: H
authors: Tabata
authors: Takuto
authors: T
authors: Tsuchiya
authors: Koji
authors: K
authors: Kadowaki
authors: Takehiro
authors: T
authors: Nakamura
authors: Ichiro
authors: I
authors: Oyama
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