Secondary |
Moscato |
1993 |
Italy |
Both |
Various |
N/A |
Various occupations |
Occupational asthma |
Removal from exposure, transferal to low exposure area (mean: 14 months) |
Limitation: no report of participation rate |
Nine of 29 subjects were asymptomatic at follow-up, all of whom ceased exposure. Subjects who continue with intermittent exposure (n=7) and daily exposure (n=4) were still symptomatic at follow-up and required pharmacological treatment. For subjects who ceased exposure (n=18), asymptomatic at follow-up was associated with shorter duration of symptoms before diagnosis, higher FEV1 and PD20 at presentation, higher FEV1 at follow-up (p<0.05), and lower bronchial reactivity at follow-up. |