Effectiveness of a worksite intervention to reduce an occupational exposure: The Minnesota wood dust study

De Ann Lazovich, David L. Parker, Lisa M. Brosseau, F. Thomas Milton, Siobhan K. Dugan, Wei Pan, Lynette Hock

Research output: Contribution to journalArticlepeer-review

54 Scopus citations


Objectives. This study assessed the effectiveness of an intervention to reduce wood dust, a carcinogen, by approximately 26% in small woodworking businesses. Methods. We randomized 48 businesses to an intervention (written recommendations, technical assistance, and worker training) or comparison (written recommendations alone) condition. Changes from baseline in dust concentration, dust control methods, and worker behavior were compared between the groups 1 year later. Results. At follow-up, workers in intervention relative to comparison businesses reported greater awareness, increases in stage of readiness, and behavioral changes consistent with dust control. The median dust concentration change in the intervention group from baseline to follow-up was 10.4% (95% confidence interval =-28.8%, 12.7%) lower than the change in comparison businesses. Conclusions. We attribute the smaller-than-expected reduction in wood dust to the challenge of conducting rigorous intervention effectiveness research in occupational settings.

Original languageEnglish (US)
Pages (from-to)1498-1505
Number of pages8
JournalAmerican journal of public health
Issue number9
StatePublished - Sep 2002
Externally publishedYes

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health


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