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Article Abstract
Objective: We evaluated the effects of ozone on respiratory-related hospital admissions in three counties in Washington State from 1990 to 2006. We further examined vulnerability to ozone by key demographic factors.
Method: Using linked hospital admission and ambient monitoring data, we estimated the age-, sex-, and health insurance-stratified associations between ozone (0 to 3 days' lag) and respiratory-related hospital admissions in King, Spokane, and Clark County, Washington.
Results: The adjusted relative risk (RR) for a 10 ppb increase in ozone at 3 days' lag was 1.04 (95% confidence interval [CI]: 1.02, 1.07) for Clark County, 1.03 (95% CI: 1.01, 1.05) for Spokane County, and 1.02 (95% CI: 1.01, 1.03) for King County. There was consistent evidence of effect modification by age.
Conclusion: Ozone at levels below federal standards contributes to respiratory morbidity among high-risk groups in Washington.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5503782 | PMC |
| http://dx.doi.org/10.1097/JOM.0000000000001042 | DOI Listing |
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