Journal article

Relationship between particulate matter and childhood asthma-basis of a future warning system for central Phoenix

Dimitrova R, Lurponglukana N, Fernando H, Runger G, Hyde P, Hedquist B, Anderson J, Bannister W, Johnson W ...see all

Atmospheric Chemistry and Physics, vol. 12, issue 5 (2012) pp. 2479-2490

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Statistically significant correlations between in-crease of asthma attacks in children and elevated concentra-tions of particulate matter of diameter 10 microns and less (PM 10) were determined for metropolitan Phoenix, Arizona. Interpolated concentrations from a five-site network provided spatial distribution of PM 10 that was mapped onto census tracts with population health records. The case-crossover sta-tistical method was applied to determine the relationship be-tween PM 10 concentration and asthma attacks. For children ages 5–17, a significant relationship was discovered between the two, while children ages 0–4 exhibited virtually no rela-tionship. The risk of adverse health effects was expressed as a function of the change from the 25th to 75th percentiles of mean level PM 10 (36 µg m −3). This increase in concentra-tion was associated with a 12.6 % (95 % CI: 5.8 %, 19.4 %) increase in the log odds of asthma attacks among children ages 5–17. Neither gender nor other demographic variables were significant. The results are being used to develop an asthma early warning system for the study area.

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  • R. Dimitrova

  • N. Lurponglukana

  • H. J S Fernando

  • G. C. Runger

  • P. Hyde

  • B. C. Hedquist

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