Prevention of Work-related Asthma: Study Search Results

Study Details

Prevention Level	Secondary
Author	Chan-Yeung
Study Year	1987
Country	Canada
Molecular Weight of Agent	LMW
Category	Wood dust or bark
Agent	Western red cedar
Occupation	Western red cedar workers (Includes cohort reported by Chan-Yeung, 1982)
Outcome/Diagnosis	Occupational asthma
Activity Intervention	Removal from exposure (mean: 4 years)
Participation Rate	218 of 232 eligible subjects (Participation rate: 94%)
Intervention Effectiveness	Compared to subjects still symptomatic (n=79), subjects who left industry asymptomatic at follow-up (n=50) were more likely to have shorter duration of exposure before onset of symptoms (p<0.05) and shorter duration of symptoms before diagnosis (p<0.05). Subjects remaining on job (n=89) continued to experience symptoms.