Abstract

BLANCO-BECERRA, Luis Camilo et al. Effect of particulate matter less than 10µm (PM₁₀) on mortality in Bogota, Colombia: a time-series analysis, 1998-2006. Salud pública Méx [online]. 2014, vol.56, n.4, pp.363-370. ISSN 0036-3634.

Objective. To analyze the association between daily mortality from different causes and acute exposure to particulate matter less than 10 microns in aerodynamic diameter (PM₁₀), in Bogota, Colombia. Materials and methods. A time-series ecological study was conducted from 1998 to 2006. The association between mortality (due to different causes) and exposure was analyzed using single and distributed lag models and adjusting for potential confounders. Results. For all ages, the cumulative effect of acute mortality from all causes and respiratory causes increased 0.71% (95%CI 0.46-0.96) and 1.43% (95%CI 0.85-2.00), respectively, per 10µg/m³ increment in daily average PM₁₀ with a lag of three days before death. Cumulative effect of mortality from cardiovascular causes was -0.03% (95%CI -0.49-0.44%) with the same lag. Conclusions. The results suggest an association between an increase in PM₁₀ concentrations and acute mortality from all causes and respiratory causes.

Keywords : air pollution; mortality; respiratory tract diseases; particulate matter; time series studies; Colombia.