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Peak expiratory flow rate (PEFR) in hairdressers.

The present cross sectional study with comparison group was undertaken to assess the lung function of hairdressers by Peak Expiratory Flow Rate (PEFR) using Wright peak flow meter. Total 385 hairdressers and 770 controls were included in the study. PEFR was observed to be reduced in hairdressers compared with controls. The difference was significant (P < 0.01) above 45 years of age. Also with increasing duration of exposure observed PEFR was reduced than expected. Above 20 years of length of service, the difference was statistically significant (P < 0.01). Smokers in hairdressing occupation had reduced PEFR than in control group, though this difference was not significant. Thus, we conclude that hairdresser's environment adversly affects their lung function and smoking may potentiate the adverse effect.