Secondary |
Cote |
1990 |
Canada |
LMW |
Wood dust or bark |
Western red cedar |
Western red cedar workers (Includes cohort reported by Chan-Yeung, 1987) |
Occupational asthma |
Transfer to low exposure area, use of respiratory equipment (mean:6.5 years) |
48 of 68 eligible subjects (Participation rate: 71%) |
For 48 subjects, the transfer to a less dusty job and the use of airstream helmet did not prevent deterioration of asthma. However, the use of the twin-cartridge respirator was associated with favorable outcome (p<0.05). |