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Pulmonary function tests and work-related respiratory and allergic symptoms in Iranian bakers.

Bakers are frequently exposed to various irritant chemicals during work which can induce respiratory problems. In this study, pulmonary function tests and self-reported respiratory and allergic symptoms in bakers were compared with matched control subjects. The frequency of respiratory and allergic symptoms was evaluated in a sample of 58 Iranian bakers and 58 control subjects using a questionnaire. Pulmonary function tests (PFT) were also measured in all participants. All respiratory symptoms were significantly higher in bakers than control croup (p<0.05 to p<0.005). All allergic symptoms in bakers were also significantly greater than control group (p<0.05 to p<0.005). In addition, all respiratory (except sputum) and allergic (except urticaria) symptoms were significantly higher in bakers compared to rest period (p<0.05 to p<0.01) during work. Most PFT values except MEF25 were also significantly lower in bakers than control subjects (p<0.05 to p<0.001). These results showed that bakers have a higher frequency of work related respiratory symptoms and to a lesser extend allergic symptoms particularly during the work period. PFT values were also significantly reduced among bakers.