Major Health Problems of Expressway Workers in
Thailand: An 8-Year Cohort Study
Chotima Charusabha BSc*,
Ketsaraporn Thongpakdee BA*, Natefa Rakmanee MSc*,
Pratap Singhasivanon MD, DrPH*, Saranath Lawpoolsri MD, PhD*
Affiliation :
* Department of Tropical Hygiene, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
Background and
Objective : Workers in the transportation sector may be expose to environmental hazards resulting in
adverse health outcomes. The present study aimed to assess environmental-hazard-related morbidity among transportation
workers over an eight-year period.
Material and Method: Data were extracted from the registry database of a cohort of workers in the Expressway Authority
of Thailand between 2004 and 2011. Annual trends and changes in health status were described. Factors associated with
major health problems were also evaluated.
Results : The cohort consisted of 2,000 to 2,700 workers. The trend of abnormal lung function, abnormal hearing, high
blood pressure, high cholesterol, and asthma significantly increased over the period.Very few workers had high serum lead
levels.
Conclusion : The present study revealed several major occupation-related health problems among transportation workers.
In addition to an annual health assessment, other control measures should be instituted to protect workers from occupation-
related exposures.
Keywords : Expressway workers, Transportation, Health impact, Occupation-related, Prospective cohort
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