Short-term effects of air pollution on respiratory hospitalizations in Ha Nam, during 2018-2020

Objectives: Air pollution has adverse effects on the respiratory system. Ha Nam is one of the most polluted provinces in Vietnam. This study aims at assessing the short-term association between air pollution and respiratory diseases among Ha Nam inhabitants during 2018-2020.

Method: This ecological study used data from Ha Nam Provincial General Hospital and Obstetric-Paediatric Hospital for health information, and data from Center for Interdisciplinary Integrated Technology Field Monitoring (FIMO) for PM_2.5 and temperature data. Time-series analysis was applied to estimate the risk of admissions due to respiratory diseases and daily ambient PM_2.5 concentrations.

Results: The majority of respiratory-related admissions were upper respiratory infections (47.3%) and pneumonia (40.8%). Number of male admissions were higher than that of female for most respiratory diseases, except chronic obstructive pulmonary disease (COPD). The strongest association between PM_2.5 concentrations and hospital admissions for respiratory diseases in Ha Nam was observed in lag 2.

Conclusion: The study found positive associations between PM_2.5 concentration and hospital admissions. Further investigation with a large admissions are need to certained findings.  estimate the number of admissions attributed to air pollution in Ha Nam.

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