The present study therefore investigates the factors, including duration of
employment and in-vehicle concentrations of fine particulate matter (PM2.5),
carbon dioxide (CO2) and nitrogen dioxide (NO2) that can influence the
prevalence of respiratory symptoms in commercial bus drivers. A total of 34
bus drivers and 51 administrative staff (comparative group) from the bus
operator in Kota Bahru, Malaysia were randomly enrolled in this cross-sectional
study. The personal characteristics and respiratory symptoms were reported
using a validated questionnaire from the American Thoracic Society
(ATS-DLD-78-A). In-vehicle concentrations of PM2.5, CO2 and NO2 were
continuously measured over eight hours on each bus driver.

Categories: Kualiti, Udara
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