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© Research
Publication : American journal of epidemiology

Indoor exposure to particulate matter and age at first acute lower respiratory infection in a low-income urban community in Bangladesh

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in American journal of epidemiology - 06 Mar 2014

Gurley ES, Salje H, Homaira N, Ram PK, Haque R, Petri WA, Bresee J, Moss WJ, Luby SP, Breysse P, Azziz-Baumgartner E

Link to Pubmed [PMID] – 24607596

Am. J. Epidemiol. 2014 Apr;179(8):967-73

The timing of a child’s first acute lower respiratory infection (ALRI) is important, because the younger a child is when he or she experiences ALRI, the greater the risk of death. Indoor exposure to particulate matter less than or equal to 2.5 µm in diameter (PM2.5) has been associated with increased frequency of ALRI, but little is known about how it may affect the timing of a child’s first ALRI. In this study, we aimed to estimate the association between a child’s age at first ALRI and indoor exposure to PM2.5 in a low-income community in Dhaka, Bangladesh. We followed 257 children from birth through age 2 years to record their age at first ALRI. Between May 2009 and April 2010, we also measured indoor concentrations of PM2.5 in children’s homes. We used generalized gamma distribution models to estimate the relative age at first ALRI associated with the mean number of hours in which PM2.5 concentrations exceeded 100 µg/m(3). Each hour in which PM2.5 levels exceeded 100 µg/m(3) was independently associated with a 12% decrease (95% confidence interval: 2, 21; P = 0.021) in age at first ALRI. Interventions to reduce indoor exposure to PM2.5 could increase the ages at which children experience their first ALRI in this urban community.

https://www.ncbi.nlm.nih.gov/pubmed/24607596