Brooks SM, Edwards JJ, Apol A et al, An epidemiologic study of workers exposed to western red cedar and other wood dusts, Chest, 1981;80:30S-32S,

BOHRF Original Authors' Main Conclusions

The original authors' main conclusions are taken from Abstract, Results and Discussion. They are decided upon by the authors of the BOHRF occupational asthma guidelines and form part of the guidelines.

Presumptive diagnosis of occupational asthma was defined on both physiologic and clinical criteria as an observed decline in FEV1 of greater than 10% from the Monday pre-shift value compared to one or more subsequent tests during any of the following 3 days exposure period and a positive clinical history. Occupational asthma was diagnosed in 10 workers. A dose dependent relationship between total western red cedar dust level and prevalence of asthma was noted with employees in jobs with the greatest dust exposure.

BOHRF Associated Evidence Statements

The BOHRF occupational asthma guidelines state that this reference is associated with the following evidence statements

*** 2++ The risk of sensitisation and occupational asthma is increased by higher exposures to many workplace agents.

Non Bohrf Information

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