Prevention of Work-related Asthma: Study Search

Prevention LevelSecondary
AuthorChan-Yeung
Study Year1982
CountryCanada
Molecular Weight of AgentLMW
Agent CategoryWood dust or bark
Specific AgentWestern red cedar
Occupation Western red cedar workers
Outcome/DiagnosisOccupational asthma
Activity Intervention Removal from exposure (mean: 3.5 years)
Participation RateLimitation: no report of participation rate
Intervention EffectivenessCompared to subjects still symptomatic (n=37), subjects who left the industry asymptomatic at follow-up (n=38) were more likely to have shorter duration of exposure prior to symptom onset (p<0.05), and shorter duration of symptoms prior to diagnosis (p<0.05). Subjects who remained on the job (n=50) continued to have asthma attacks.
Page last reviewed: February 20, 2020