Mortalidad aguda asociada con partículas suspendidas finas y gruesas en habitantes de la Zona Metropolitana de Monterrey./ [Mortality associated with fine and coarse suspended particles, in inhabitants of Monterrey Metropolitan Area].

OBJECTIVE: To estimate the mortality risk of fine (PM2.5) and coarse (PM2.5-10) particles in the Metropolitan Area of Monterrey (MAM). MATERIALS AND METHODS: A retrospective ecological time-series analysis (2000-2014) was conducted using total and specific causes of mortality, and daily mean PM2.5 and PM2.5-10. Generalized additive distributed lag models controlling for trend, seasonality, day of the week, meteorological conditions and gaseous pollutants. RESULTS: Mean (SD) PM2.5 and PM2.5-10 concentrations were 26.59 µg/ m3 (11.06 µg/m3) and 48.83 µg/m3 (21.15 µg/m3). An increase of 10 µg/m3 of PM2.5 (lag 0) was associated with 11.16% (95%CI:1.03-21.39) increased risk of respiratory mortality in children =65 years old. The risk of mortality associated with the concentration of coarse particles was lower. CONCLUSIONS: Positive and significant associations were observed between exposure to particulate matter and daily mortality in the MAM´s population.