title: Multiple myeloma and occupational exposures: a population-based case-control study.
abstract: OBJECTIVE
  The present study aims to identify occupational exposures associated with incidence of multiple myeloma (MM).
  
  
  METHODS
  A population-based case-control study of MM (ICD-9 203) was conducted among Canadian males, with a total of 342 cases and 1506 controls contributing to the final analyses. Conditional logistic regression was used to estimate odds ratios (OR) and confidence intervals (CI), stratifying by age groups and province of residence.
  
  
  RESULTS
  Based on the most parsimonious multivariable model, the following variables were significantly associated with an increased incidence of MM: exposure to coal dust (OR 1.7, 95% CI 1.2-2.4), long-held occupations as a carpenter (OR 3.2, 95% CI 1.4-7.1) or a machinist (OR 2.4, 95% CI 1.0-5.8); and immediate family member having been previously diagnosed with certain cancers (OR 1.4, 95% CI 1.1-1.8).
  
  
  CONCLUSIONS
  In this study of Canadian men, a higher risk of MM may be associated with exposure to coal dust, long-held occupations as a carpenter or machinist, and a positive family history of cancer.
authors.affiliation: Experimental Oncology, Alberta Health Services-Cancer Care, Edmonton, Alberta, Canada.
authors.forename: Sunita
authors.initials: S
authors.lastname: Ghosh
authors.forename: John R
authors.initials: JR
authors.lastname: McLaughlin
authors.forename: John J
authors.initials: JJ
authors.lastname: Spinelli
authors.forename: James A
authors.initials: JA
authors.lastname: Dosman
authors.forename: Helen H
authors.initials: HH
authors.lastname: McDuffie
authors.forename: Punam
authors.initials: P
authors.lastname: Pahwa
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002170:Canada / Q000453:epidemiology; D016022:Case-Control Studies; D003031:Coal / Q000009:adverse effects; D004391:Dust; D020022:Genetic Predisposition to Disease / Q000453:epidemiology; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D009101:Multiple Myeloma / Q000453:epidemiology* / Q000209:etiology*; D016273:Occupational Exposure / Q000009:adverse effects*; D009790:Occupations / Q000145:classification / Q000706:statistics & numerical data; D012307:Risk Factors
chemical_list: D003031:Coal; D004391:Dust