Short-term associations of PM10 attributed to biomass burning with respiratory and cardiovascular hospital admissions in Peninsular Malaysia

医学 混淆 泊松回归 人口学 呼吸系统 气动直径 空气污染物 环境卫生 空气污染 内科学 人口 社会学 化学 有机化学
作者
Muhammad Abdul Basit Ahmad Tajudin,Lina Madaniyazi,Xerxes Seposo,Mazrura Sahani,Aurelio Tobías,Mohd Talib Latif,Wan Rozita Wan Mahiyuddin,Mohd Faiz Ibrahim,Shingo Tamaki,Kazuhiko Moji,Masahiro Hashizume,Chris Fook Sheng Ng
出处
期刊:International Journal of Epidemiology [Oxford University Press]
卷期号:53 (4)
标识
DOI:10.1093/ije/dyae102
摘要

Abstract Background Biomass burning (BB) is a major source of air pollution and particulate matter (PM) in Southeast Asia. However, the health effects of PM smaller than 10 µm (PM10) originating from BB may differ from those of other sources. This study aimed to estimate the short-term association of PM10 from BB with respiratory and cardiovascular hospital admissions in Peninsular Malaysia, a region often exposed to BB events. Methods We obtained and analyzed daily data on hospital admissions, PM10 levels and BB days from five districts from 2005 to 2015. We identified BB days by evaluating the BB hotspots and backward wind trajectories. We estimated PM10 attributable to BB from the excess of the moving average of PM10 during days without BB hotspots. We fitted time-series quasi-Poisson regression models for each district and pooled them using meta-analyses. We adjusted for potential confounders and examined the lagged effects up to 3 days, and potential effect modification by age and sex. Results We analyzed 210 960 respiratory and 178 952 cardiovascular admissions. Almost 50% of days were identified as BB days, with a mean PM10 level of 53.1 µg/m3 during BB days and 40.1 µg/m3 during normal days. A 10 µg/m3 increment in PM10 from BB was associated with a 0.44% (95% CI: 0.06, 0.82%) increase in respiratory admissions at lag 0–1, with a stronger association in adults aged 15–64 years and females. We did not see any significant associations for cardiovascular admissions. Conclusions Our findings suggest that short-term exposure to PM10 from BB increased the risk of respiratory hospitalizations in Peninsular Malaysia.
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