What is the frequency of occupational asthma?

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The annual population incidence of occupationally related asthma ranges from an estimated 12 to 170 cases per million workers with an estimated mean of 47 cases per million workers.

Evidence

Ameille J, Pauli G, CalastrengCrinquand A et al , Reported incidence of occupational asthma in France , J Occup Environ Med , 2003 ; 60 : 136-41

Blanc PD & Toren K , How much adult asthma can be attributed to occupational factors? , Am J Respir Crit Care Med , 1999 ; 107 : 580-587

Karjalainen A, Kurppa K, Virtanen S, Keskinen H, Nordman H , Incidence Of Occupational Asthma By Occupation and Industry In Finland , Am J Ind Med , 2000 ; 37 : 451-458

Meredith SK, Taylor VM, McDonald JC , Occupational respiratory disease in the United Kingdom 1989: a report to the British Thoracic Society and the Society of Occupational Medicine by the SWORD project group , Br J Ind Med , 1991 ; 48 : 292-298