Blowin' in the Wind of an Invisible Killer: Long-Term Exposure to Ozone and Respiratory Mortality in the United States

60 Pages Posted: 7 Mar 2023

See all articles by Ziheng Liu

Ziheng Liu

University of Wisconsin - Madison

Xi Chen

Yale School of Public Health - Department of Health Policy and Management; Yale University - Yale Institution for Social and Policy Studies

Qinan Lu

University of Wisconsin - Madison

Abstract

In light of the low public awareness of ozone pollution and the potential health threats posed by long-term ozone exposure, this study estimates the causal effect of long-term ozone exposure on respiratory mortality. By employing an instrumental variable based on the long-distance transmission of ozone from upwind neighbor counties, we discover that an increase of one standard deviation in the average concentrations of ozone in the preceding five years increases respiratory mortality by 0.062–0.066 standard deviations. The findings indicate that long-term ozone exposure increases mortality from both acute and chronic respiratory diseases and has significant adverse effects on vulnerable groups. Furthermore, we discover that the respiratory mortality rate responds to long-term ozone exposure nonlinearly, and that there is a critical threshold at which the adverse effects of ozone exposure commence. Our bootstrap simulation results suggest that if ozone concentrations in the preceding five years decrease by 10 percent, 11,391 deaths from respiratory diseases could be avoided in the United States annually, with resulting health benefits valued at around $106.85–113.67 billion. Our further estimates suggest that, consistent with general respiratory diseases, long-term ozone exposure also contributes to deaths from COVID-19 during the pandemic.

Note:
Funding Information: Xi Chen acknowledges funding from the Yale PEPPER Center Scholar Award (P30AG021342), two NIH/NIA Grants (R01AG077529; K01AG053408), and Yale Tobin Faculty Research Award.

Conflict of Interests: The authors declare that they have no conflict of interest.

Keywords: long-term exposure, ozone, respiratory diseases, nonlinear responses, health benefits, COVID-19

JEL Classification: I15, J14, Q51, Q53

Suggested Citation

Liu, Ziheng and Chen, Xi and Lu, Qinan, Blowin' in the Wind of an Invisible Killer: Long-Term Exposure to Ozone and Respiratory Mortality in the United States. IZA Discussion Paper No. 15981, Available at SSRN: https://ssrn.com/abstract=4377783 or http://dx.doi.org/10.2139/ssrn.4377783

Ziheng Liu (Contact Author)

University of Wisconsin - Madison

Xi Chen

Yale School of Public Health - Department of Health Policy and Management ( email )

60 College St
New Haven, CT 06520
United States

Yale University - Yale Institution for Social and Policy Studies ( email )

77 Prospect Street
New Haven, CT 06520
United States

HOME PAGE: http://isps.yale.edu/team/xi-chen

Qinan Lu

University of Wisconsin - Madison ( email )

716 Langdon Street
Madison, WI 53706-1481
United States

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