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Original ArticleOpen Access
Respiratory Symptoms and Pulmonary Function of Traffic Policemen in Thonburi
Maranetra KN 
,
Nana A ,
Naruman C ,
Aksomint M ,
Chalermsanyakom T
,
Nana A ,
Naruman C ,
Aksomint M ,
Chalermsanyakom T A cross-sectional study was conducted to assess whether traffic policemen working in
Thonburi district of Bangkok had poorer respiratory health than the normal Thai population. The
benefits of wearing masks as a preventative measure against the respiratory hazards of air pollution
were assessed. Traffic policemen (n=629) who had worked in Thonburi and male subjects (n=303,
the control group) were evaluated for respiratory symptoms using the British Medical Research
Council questionnaire. Their pulmonary function was measured by spirometry. Only non-smokers
were included in the final analysis and it was found that traffic policemen (n=242) suffered significantly
more cough or phlegm (18.6% vs 7.8%, P=0.005) and more rhinitis symptoms (17.8% vs
7.8%, P=0.009) than the control subjects (n=129). The traffic policemen also had a significantly
higher prevalence of abnormal air flow (FEV1
Thonburi district of Bangkok had poorer respiratory health than the normal Thai population. The
benefits of wearing masks as a preventative measure against the respiratory hazards of air pollution
were assessed. Traffic policemen (n=629) who had worked in Thonburi and male subjects (n=303,
the control group) were evaluated for respiratory symptoms using the British Medical Research
Council questionnaire. Their pulmonary function was measured by spirometry. Only non-smokers
were included in the final analysis and it was found that traffic policemen (n=242) suffered significantly
more cough or phlegm (18.6% vs 7.8%, P=0.005) and more rhinitis symptoms (17.8% vs
7.8%, P=0.009) than the control subjects (n=129). The traffic policemen also had a significantly
higher prevalence of abnormal air flow (FEV1
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