The natural history of occupational asthma (OA) is influenced by many determinants. This particular case-control study was conducted within a retrospective cohort of young workers in the bakery, pastry-making and hairdressing sectors. Cases were subjects diagnosed as ‘confirmed’ or ‘probable’ OA consecutively to a medical visit (N=31). C
Among bakers and pastry-makers, only atopy is an independent risk factor of OA.
Among hairdressers, several variables are associated with OA, such as body mass index and the score of exposure intensity. These are independent predictors of OA but the role of atopy is weak. Intake of vitamin A and C is higher among hairdressers cases.
Thus, this study suggests that the influence of several factors on the incidence of OA might vary across exposure settings.