Kogevinas M, Anto JM, Soriano JB, Tobias A, Burney P, The risk of asthma attributable to occupational exposures. A population-based study in Spain. Spanish Group of the European Asthma Study, Am J Respir Crit Care Med, 1996;154:137-143,

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.

The causes and derived estimates of the risk of asthma attributable to occupational exposures were examined as part of the EC Respiratory Health Survey, in a randomly selected population of five areas of Spain. Bronchial reactivity was determined in 1,797 subjects and atopy in 2,164. Twenty-one occupational sets were defined using information on current occupation, or in subjects reporting change of occupation due to respiratory problems, their occupation at that time. The highest risk of asthma was observed for laboratory technicians, spray painters, bakers, plastics and rubber workers, welders, and cleaners. The risk of asthma attributed to occupational exposures after adjusting for age, sex, residence, and smoking status was 5.0% when asthma was defined as "bronchial reactivity and a report of wheezing or whistling in the chest during the last 12 mo," and 6.7% when asthma was defined as "bronchial reactivity and a report of asthma-related symptoms or medication." Estimates of the attributable risk for adult onset asthma were higher. Authors conclude that occupational exposures constitute a substantial cause of asthma in the young adult Spanish population.

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