Prevention of Work-related Asthma: Study Search Results

Study Details
Prevention LevelSecondary
Study Year1996
Molecular Weight of AgentLMW
CategoryWood dust or bark
AgentWestern red cedar
OccupationWestern red cedar workers (Includes cohort reported by Chan-Yeung, 1987 and Cote, 1990)
Outcome/DiagnosisOccupational asthma
Activity InterventionRemoval from exposure (FU mean: 5.3 yrs - unexposed workers; FU mean: 6.9 yrs - exposed workers; FU mean: 4.0 yrs - controls)
Participation Rate201 of 280 eligible subjects (Participation rate: 72%)
Intervention EffectivenessSubjects who continued to be exposed (n=158) had a more rapid decline in FEV1 (-26 ml/yr, p=0.09) than controls (saw mill workers, n=399). Subjects who were removed from exposure after diagnosis (n=122) showed a similar rate of decline in FEV1 (-3 ml/yr, p=0.86) compared to controls.
Page last reviewed: May 25, 2022