Locally generated particulate pollution and respiratory symptoms in young children

Pierse, N.; Rushton, I.; Harris, R. S.; Kuehni, C. E.; Silverman, M.; Grigg, J.
March 2006
Thorax;Mar2006, Vol. 61 Issue 3, p216
Academic Journal
Background: Particulate matter <10 µm (PM10) from fossil fuel combustion is associated with an increased prevalence of respiratory symptoms in children and adolescents. However, the effect of PM10 on respiratory symptoms in young children is unclear. Methods: The association between primary PM10 (particles directly emitted from local sources) and the prevalence and incidence of respiratory symptoms was studied in a random sample cohort of 4400 Leicestershire children aged 1-5 years surveyed in 1998 and again in 2001. Annual exposure to primary PM10 was calculated for the home address using the Airviro dispersion model and adjusted odds ratios (ORS) and 95% confidence intervals were calculated for each µg/m³ increase. Results: Exposure to primary PM10 was associated with the prevalence of cough without a cold in both 1998 and 2001, with adjusted ORs of 1.21 (1.07 to 1.38) and 1.56 (1.32 to 1.84) respectively. For night time cough the ORs were 1.06 (0.94 to 1.19) and 1.25 (1.06 to 1.47), and for current wheeze 0.99 (0.88 to 1.12) and 1.28 (1.04 to 1.58), respectively. There was also an association between primary PM10 and new onset symptoms. The ORs for incident symptoms were 1.62 (1.31 to 2.00) for cough without a cold and 1.42 (1.02 to 1.97) for wheeze. Conclusion: In young children there was a consistent association between locally generated primary PM10 and the prevalence and incidence of cough without a cold and the incidence of wheeze which was independent of potential confounders.


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