Sophia Rodopoulou1, Marie-Cecile Chalbot2, Evangelia Samoli1, David W Dubois3, Bruce D San Filippo4, Ilias G Kavouras5. 1. Department of Hygiene, Epidemiology and Medical Statistics, Medical School, National and Kapodistrian University of Athens, Goudi, 115 27 Athens, Greece. 2. Department of Environmental and Occupational Health, University of Arkansas for Medical Sciences, College of Public Health, 4301 West Markham St., Little Rock, AR 72205-7199, USA. 3. Department of Plant and Environmental Sciences, New Mexico State University, Box 30003 MSC 3Q, Las Cruces, NM 88003-8003, USA. 4. Memorial Medical Center, Las Cruces, NM 88003-8003, USA. 5. Department of Environmental and Occupational Health, University of Arkansas for Medical Sciences, College of Public Health, 4301 West Markham St., Little Rock, AR 72205-7199, USA. Electronic address: ikavouras@uams.edu.
Abstract
INTRODUCTION: Doña Ana County in New Mexico regularly experiences severe air pollution episodes associated with windblown dust and fires. Residents of Hispanic/Latino origin constitute the largest population group in the region. We investigated the associations of ambient particulate matter and ozone with hospital emergency room and admissions for respiratory and cardiovascular visits in adults. METHODS: We used trajectories regression analysis to determine the local and regional components of particle mass and ozone. We applied Poisson generalized models to analyze hospital emergency room visits and admissions adjusted for pollutant levels, humidity, temperature and temporal and seasonal effects. RESULTS: We found that the sources within 500km of the study area accounted for most of particle mass and ozone concentrations. Sources in Southeast Texas, Baja California and Southwest US were the most important regional contributors. Increases of cardiovascular emergency room visits were estimated for PM10 (3.1% (95% CI: -0.5 to 6.8)) and PM10-2.5 (2.8% (95% CI: -0.2 to 5.9)) for all adults during the warm period (April-September). When high PM10 (>150μg/m(3)) mass concentrations were excluded, strong effects for respiratory emergency room visits for both PM10 (3.2% (95% CI: 0.5-6.0)) and PM2.5 (5.2% (95% CI: -0.5 to 11.3)) were computed. CONCLUSIONS: Our analysis indicated effects of PM10, PM2.5 and O3 on emergency room visits during the April-September period in a region impacted by windblown dust and wildfires.
INTRODUCTION: Doña Ana County in New Mexico regularly experiences severe air pollution episodes associated with windblown dust and fires. Residents of Hispanic/Latino origin constitute the largest population group in the region. We investigated the associations of ambient particulate matter and ozone with hospital emergency room and admissions for respiratory and cardiovascular visits in adults. METHODS: We used trajectories regression analysis to determine the local and regional components of particle mass and ozone. We applied Poisson generalized models to analyze hospital emergency room visits and admissions adjusted for pollutant levels, humidity, temperature and temporal and seasonal effects. RESULTS: We found that the sources within 500km of the study area accounted for most of particle mass and ozone concentrations. Sources in Southeast Texas, Baja California and Southwest US were the most important regional contributors. Increases of cardiovascular emergency room visits were estimated for PM10 (3.1% (95% CI: -0.5 to 6.8)) and PM10-2.5 (2.8% (95% CI: -0.2 to 5.9)) for all adults during the warm period (April-September). When high PM10 (>150μg/m(3)) mass concentrations were excluded, strong effects for respiratory emergency room visits for both PM10 (3.2% (95% CI: 0.5-6.0)) and PM2.5 (5.2% (95% CI: -0.5 to 11.3)) were computed. CONCLUSIONS: Our analysis indicated effects of PM10, PM2.5 and O3 on emergency room visits during the April-September period in a region impacted by windblown dust and wildfires.
Authors: Sophia Rodopoulou; Evangelia Samoli; Marie-Cecile G Chalbot; Ilias G Kavouras Journal: Sci Total Environ Date: 2015-07-29 Impact factor: 7.963
Authors: Marlene Cortez-Lugo; Matiana Ramírez-Aguilar; Rogelio Pérez-Padilla; Raúl Sansores-Martínez; Alejandra Ramírez-Venegas; Albino Barraza-Villarreal Journal: Int J Environ Res Public Health Date: 2015-08-28 Impact factor: 3.390