title: Municipal firefighter exposure groups, time spent at fires and use of self-contained-breathing-apparatus.
abstract: BACKGROUND
  Previous studies have found significant associations between firefighting and cancer.
  
  
  METHODS
  Fires, vehicle movement, and firefighter job assignment were determined, and storage and distribution of self-contained-breathing-apparatus (SCBAs) were tracked for 12 months. Time spent at fires and use of SCBAs were calculated.
  
  
  RESULTS
  Only 66% of fire department personnel were 1st-line combat firefighters. Number of runs was an unreliable surrogate for time spent at fires. Eight firefighter exposure groups were identified (based on job title, firehall assignment, and time spent at fires), ranging from no exposures to 3,244 min/year/firefighter. SCBAs appear to have been used for approximately 50% of the time at structural fires but for only 6% of the time at all fires.
  
  
  CONCLUSIONS
  Failure of previous studies to identify homogeneous exposure groups may have resulted in misclassification and underestimates of health risks. The approach used in this study may be used in epidemiological studies to identify exposure/response relationships.
authors.affiliation: Department of Industrial Engineering, University of Quebec (UTQR), Quebec, Canada. caustin@sarec.org
authors.forename: C C
authors.initials: CC
authors.lastname: Austin
authors.forename: G
authors.initials: G
authors.lastname: Dussault
authors.forename: D J
authors.initials: DJ
authors.lastname: Ecobichon
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D003625:Data Collection; D005390:Fires; D006801:Humans; D008297:Male; D008875:Middle Aged; D016273:Occupational Exposure / Q000009:adverse effects / Q000517:prevention & control*; D011792:Quebec / Q000453:epidemiology; D012016:Reference Values; D012134:Respiratory Protective Devices / Q000706:statistics & numerical data*; D018570:Risk Assessment; D012307:Risk Factors; D012680:Sensitivity and Specificity; D015208:Smoke Inhalation Injury / Q000517:prevention & control*; D014505:Urban Population