Time-series analysis of ambient PM 2.5 and cardiorespiratory emergency room visits in Lima, Peru during 2010-2016

There have been no time-series studies of air pollution in Peru. Here we evaluate the effect of ambient PM on emergency room (ER) visits in Lima. We estimated daily PM levels at a 1 km resolution during 2010-2016 using ground measurements, satellite data, and chemical transport model simulations. Po...

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Bibliographic Details
Published in:Journal of exposure science & environmental epidemiology 2020-07, Vol.30 (4), p.680
Main Authors: Tapia, V, Steenland, K, Sarnat, S E, Vu, B, Liu, Y, Sánchez-Ccoyllo, O, Vasquez, V, Gonzales, G F
Format: Article
Language:English
Subjects:
Adult
Aged
Air Pollutants - analysis
Air Pollution - analysis
Air Pollution - statistics & numerical data
Cardiovascular Diseases - epidemiology
Emergency Service, Hospital - statistics & numerical data
Environmental Exposure - analysis
Environmental Exposure - statistics & numerical data
Female
Humans
Male
Meteorology
Middle Aged
Particulate Matter - analysis
Peru - epidemiology
Poverty
Respiratory Tract Diseases - epidemiology
Stroke
Time
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Summary:There have been no time-series studies of air pollution in Peru. Here we evaluate the effect of ambient PM on emergency room (ER) visits in Lima. We estimated daily PM levels at a 1 km resolution during 2010-2016 using ground measurements, satellite data, and chemical transport model simulations. Population-weighted average daily PM levels were calculated for each district in Lima (n = 40), and assigned to patients based on residence. ER visits for respiratory and circulatory diseases were gathered from nine large public hospitals. Poisson regression was used to estimate the rate ratio for daily ER visits with change in daily PM , controlling for meteorology, time trends, and district. For each interquartile range (IQR) increase in PM , respiratory disease ER visits increased 4% (95% CI: 0-5%), stroke visits 10% (3-18%), and ischemic heart disease visits (adults, 18-64 years) 11% (-1, 24%). Districts with higher poverty showed significantly stronger associations of PM and respiratory disease ER visits than districts with lower poverty. Effects were diminished 24-42% using Lima-wide instead of district-specific PM levels. Short-term exposure to ambient PM is associated with increases in ER visits in Lima for respiratory diseases and stroke, and among middle-aged adults, ischemic heart disease.
ISSN:1559-064X