Reference

BOHRF Original Authors' Main Conclusions

The original authors' main conclusions are taken from Abstract, Results and Discussion. They are decided upon by the authors of the BOHRF occupational asthma guidelines and form part of the guidelines.

43 attributable risk estimates were obtained from 19 different countries. The median value for the attributable risk of occupational asthma was 9% and 15% when using studies of highest quality. Occupational factors are associated with about 1 in 10 cases of adult asthma, including new onset disease and reactivation of pre-existing asthma. The estimated incidence of occupational asthma varied widely among countries from a low of 1.2 to a high of 17.4 per 100,000 person-years. The highest rate was observed in Finland. The median incidence of occupational asthma is 4.7 cases per 100,000 person-years. Assuming an incidence for all asthma among adults of working age of 100 per 100,000 person-years, the estimated median attributable risk is 5%.

BOHRF Associated Evidence Statements

The BOHRF occupational asthma guidelines state that this reference is associated with the following evidence statements