title: Relative risk of death from exposure to air pollutants: a short-term (2003-2007) study in Mexicali, Baja California, México.
abstract: Studies have shown associations between respiratory diseases and air pollutants in Mexicali, México; however, none have addressed relative risk (RR) of death. By using Poisson regression models, we quantified the RR by exposure for: particulate matter (PM(10), PM(2.5)), carbon monoxide (CO), nitrogen dioxide (NO(2)), ozone (O(3)), and sulfur dioxide (SO(2)) over a 5-year period and by climate (winter or summer). RRs were estimated utilizing each pollutant (single-pollutant model) on the same day as pollutant concentration were measured (lag 0) and up to 7 days later to the pollutant measurements (lag 7). Significant associations were found in RRs for one interquartile range increment of the corresponding pollutant, such as: PM(2.5) lagged 5 days in winter and for the 5-year period (RR, 1.041 and 1.028, respectively); CO lagged 1 day in winter and for the 5-year period (RR, 1.044 and 1.032, respectively); NO(2) on the current day (lag 0) in summer (RR = 1.037); and SO(2) lagged one day for the 5-year period (RR = 1.023).
authors.affiliation: Bioengineering and Environmental Health, Autonomous University of Baja California, Blvd. Benito Juarez y Calle Normal s/n, Col. Insurgentes Este, Mexicali, México. investigador.reyna@gmail.com
authors.forename: Marco A
authors.initials: MA
authors.lastname: Reyna
authors.forename: Miguel E
authors.initials: ME
authors.lastname: Bravo
authors.forename: Roberto
authors.initials: R
authors.lastname: López
authors.forename: Efraín C
authors.initials: EC
authors.lastname: Nieblas
authors.forename: Martha L
authors.initials: ML
authors.lastname: Nava
mesh_terms: D000393:Air Pollutants / Q000633:toxicity*; D004781:Environmental Exposure; D005740:Gases / Q000633:toxicity; D006801:Humans; D008800:Mexico / Q000453:epidemiology; D052638:Particulate Matter / Q000633:toxicity; D012044:Regression Analysis; D012140:Respiratory Tract Diseases / Q000453:epidemiology* / Q000401:mortality*; D012306:Risk; D012621:Seasons; D013997:Time Factors
chemical_list: D000393:Air Pollutants; D005740:Gases; D052638:Particulate Matter