title: Acute pulmonary function change associated with work on large dairies in California.
abstract: OBJECTIVE
  To study whether dairy workers in California have lower baseline and greater cross-shift decrements in lung function than control employees.
  
  
  METHODS
  A cross-sectional study of 210 dairy and 47 control workers who completed questionnaires and spirometry before and after the work shift.
  
  
  RESULTS
  Dairy work was associated with mean baseline differences of -0.132 L (P = 0.07) and -0.131 L (P = 0.13) in forced expiratory volume in 1 second and forced vital capacity, respectively, compared with control employees, adjusting for age, height, smoking status, and days back at work since last day off. Dairy work was associated with a mean cross-shift difference of -65.2 mL (P = 0.02) and -103.1 mL (P < 0.01) in forced expiratory volume in 1 second and forced vital capacity, respectively, adjusting for smoking status and work-shift time.
  
  
  CONCLUSIONS
  Dairy work in California was associated with mild acute airway obstruction. The unclear long-term effect of dairy work in California merits further investigation.
authors.affiliation: Departments of Public Health Sciences, University of California, Davis, CA 95616, USA.
authors.forename: Chelsea
authors.initials: C
authors.lastname: Eastman
authors.forename: Marc B
authors.initials: MB
authors.lastname: Schenker
authors.forename: Diane C
authors.initials: DC
authors.lastname: Mitchell
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Tancredi
authors.forename: Deborah H
authors.initials: DH
authors.lastname: Bennett
authors.forename: Frank M
authors.initials: FM
authors.lastname: Mitloehner
mesh_terms: D000208:Acute Disease; D000328:Adult; D017677:Age Distribution; D000382:Agricultural Workers' Diseases / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology; D000395:Air Pollutants, Occupational / Q000009:adverse effects*; D000402:Airway Obstruction / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology*; D001249:Asthma / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology; D002140:California; D003430:Cross-Sectional Studies; D003612:Dairying; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D012016:Reference Values; D012129:Respiratory Function Tests; D018570:Risk Assessment; D013147:Spirometry / Q000379:methods; D011795:Surveys and Questionnaires; D014797:Vital Capacity / Q000502:physiology*
chemical_list: D000395:Air Pollutants, Occupational