Logo image
Open Research University homepage
Surrey researchers Sign in
Seasonal association between ambient ozone and hospital admission for respiratory diseases in Hanoi, Vietnam
Journal article   Open access   Peer reviewed

Seasonal association between ambient ozone and hospital admission for respiratory diseases in Hanoi, Vietnam

Ly M. T. Luong, Dung Phung, Tran Ngoc Dang, Peter D. Sly, Lidia Morawska and Phong K. Thai
PloS one, Vol.13(9), pp.e0203751-e0203751
24/09/2018
PMCID: PMC6152873
PMID: 30248114

Abstract

Multidisciplinary Sciences Science & Technology Science & Technology - Other Topics
Background Many studies have indicated the detrimental effect of ambient ozone to respiratory health in different countries. The levels of ozone in Hanoi, Vietnam are frequently above the WHO guideline but very few studies on the effects of ambient ozone on human health have been conducted in this location. This study aimed to examine the effects of ozone on hospital admission for respiratory diseases in Hanoi, by diseases, ages and seasons. Methods Hospital admissions, air pollutants and meteorological data were collected from January 2010 to June 2014. We used generalized linear models and distributed lag linear model to assess the association. In addition to full year analysis, we conducted restricted analysis of the data for two summer (from June-August) and winter (from December-February) seasons and grouped hospital admissions by diseases and ages (all ages, children 0 to 5 years and elderly >65 years). The delayed effect of ozone was assessed using lags of up to 5 days. Results Ozone has a stronger effect on the risk of hospital admission for respiratory diseases and wheeze-associated disorders in the winter. For respiratory diseases, children were affected by ozone more than other age groups in both winter and summer. Each increase of 10 mu g/m(3) of ozone is associated with an increase of 6.2% risk of admission for respiratory disease among children in the winter and 1.2% in the summer. For wheeze-associated disorders, the elderly group seemed to be more affected by ozone in full year and winter but no significant association was found between ozone and admission for wheeze-associated diseases in any age group. Conclusions Ozone is a risk factor for respiratory admission, especially amongst children under 5 years old in Hanoi, and ozone has a stronger effect in the winter than in the summer in this city.
url
https://doi.org/10.1371/journal.pone.0203751View
Published (Version of record) Open

Metrics

Details

Logo image

Usage Policy