Mortalidad aguda asociada con partículas suspendidas finas y gruesas en habitantes de la Zona Metropolitana de Monterrey

Abstract

Objective: To estimate the mortality risk of fine (PM2.5) and coarse (PM2.5-10) particles in the Metropolitan Area of Mon-terrey (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, meteoro-logical conditions and gaseous pollutants.

Results: Mean (SD) PM2.5 and PM2.5-10 concentrations were 26.59 gm3(11.06 gm3) and 48.83 gm3 (21.15 gm3). An increase of 10 gm3 of PM2.5 (lag 0) was associated with 11.16 (95CI:1.03-21.39) increased risk of respiratory mortality in children 5 years old and 6.6 (95CI 3.31-9.37) increased risk of pneumonia-influenza in adults 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.