Embedded Files
Working Papers
Working Papers
Medicare Part D and Retirement Lock: The Role of the Affordable Care Act and Medicaid Expansion (Best Third Year Paper, Solo-authored)
Presentations:
American Society of Health Economists Annual Meeting, Minneapolis, MN 2026
Pennsylvania Economic Association Annual Conference, Reading, PA 2025
Award:
Center for Aging and Policy Studies Travel Grant (External Funding), $1,500, 2022
The Karen R. Hitchcock New Frontiers Fund for Research, Initiatives for Women, $1,000, 2022
Impacts of Integrated Dual Eligible Special Needs Plans on Access to Medicaid Home and Community-Based Services among Adults with Alzheimer's, with Eric Slade, Quincy Samus, Karen Shen, Mark Meiselbach, Tamar Rodney, and Daniel Polsky
Presentations:
NBER Coordinating Center on the Economics of AD/ADRD Prevention, Treatment, and Care, Rockville, MD 2026
American Society of Health Economists Annual Meeting, Minneapolis, MN 2026
Geographic and Racial/Ethnic Disparities in the Density of Maternal Health Care Providers, with Pinka Chatterji, David Strogatz, Anne M. Gadomski, and Chun-Yu Ho
Selected Publications
Selected Publications
(# indicates equal contribution and co-first author)
Pinka Chatterji, Chun-Yu Ho, and Quan Qi# (2026). The Impacts of TRAP Laws on the Supply of Maternal Care Providers. Health Economics, 35: 866–895
Abstract: This paper examines the impact of Targeted Regulation of Abortion Providers (TRAP) laws on the supply and composition of maternal healthcare providers, particularly obstetrician-gynecologists (OB/GYNs). We exploit the staggered enactment of TRAP laws across U.S. states from 2010 to 2021 using a propensity score matching and stacked difference-in-differences approach. Our analytic sample includes physician-, county- and state-level measures of OB/GYN supply, newly graduated OB/GYNs, medical school and residency program applicants, nurse practitioners (NPs) and physician assistants (PAs) who practice women's healthcare, as well as advanced practice nurse midwives. TRAP law enactment is associated with a statistically significant reduction of 2.09 in OB/GYN supply per 100,000 females aged 15–44 (6.6% relative to the baseline). This decline is particularly pronounced among OB/GYNs aged 55–64. For OB/GYNs under 34, the estimates suggest a decline but this finding should be interpreted cautiously given pre-trends. TRAP laws also are associated with a reduction in the supply of newly graduated OB/GYNs from lower-ranked medical schools. We find no evidence that NPs, PAs, or midwives substitute for the decline in OB/GYNs. Mechanism analyses provide suggestive evidence that the supply contraction operates through exit rather than relocation. These findings highlight unintended consequences of abortion restrictions on broader maternal healthcare provision.
Presentations:
Chinese Economists Society North America Annual Conference, Atlanta, GA 2026
World Congress of the Econometric Society, Seoul, Korea 2025 (Accepted)
American Society of Health Economists Annual Meeting, Nashville, TN 2025
Eastern Economic Conference Annual Meeting, New York City, NY 2025
Allied Social Science Associations Annual Meeting, San Francisco, CA 2025
Southern Economic Conference Annual Meeting, Washington, DC 2024
Association for Public Policy Analysis and Management Research Conference, National Harbor, MD 2024
Award:
Institute for Humane Studies Expense Support (External Funding), $2,189, 2025
Department of Economics Student Travel Award, University at Albany, $500, 2025
The Karen R. Hitchcock New Frontiers Fund for Research, Initiatives for Women, $700, 2024
Media:
Pinka Chatterji, Chun-Yu Ho, and Quan Qi# (2026). Import Competition and Racial Disparities in Mortality: Evidence from the Japanese Trade Shock. Health Economics, 35(2), 265-293.
Abstract: This paper examines the effects of increased trade between Japan and the U.S. on mortality rates in the U.S. using a shift-share instrumental variables approach. Overall, we find that an increase in Japanese imports is associated with higher rates of cardiovascular disease (CVD) mortality and lower rates of mortality from accidents. Effects of Japanese imports on deaths of despair are inconsistent, but there is a positive association between imports and drug-related deaths. These effects exhibit significant racial disparities. Specifically, a $1,000 increase in import competition is associated with a 3.0% increase in CVD deaths per 100,000 Black individuals aged 20-64 years old, while there is no statistically significant effect among whites. Additionally, a $1,000 increase in import competition is associated with a 13.5% increase in drug-related deaths per 100,000 Black individuals aged 20-64 years old compared to a 7.8% increase among white individuals. Effects on mortality rates from accidents are driven by deaths among whites. Our findings also indicate that the rise in CVD and drug-related mortality is concentrated among males and in regions with relatively high shares of employment in the automobile or computer industries.
Presentations:
American Society of Health Economists Annual Meeting, San Diego, CA 2024
Annual Meetings of the Midwest Economics Association, Chicago, IL 2024
Eastern Economic Association Conference, Boston, MA 2024
Award:
Graduate Student Association Grant Award, $585, 2025
Department of Economics Student Travel Award, University at Albany, $400, 2024
Media:
Li-Xia Liang, Jingtai Wang, Maxwell D. Weidmann, Randy Tangang, Jia-Xiang Dong, Quan Qi, Liqiong Guo, Zhongguo Huang, Jun Rong Ma, Najm Alsadat Madani, Guoqiang Chen, and Shao Lin (2026). Deadly Heat: The Impacts of Extreme Heat on Mortality, Attributable Risks and Thresholds. Ecotoxicology and Environmental Safety, 315, 120114.
Comparing Human-only, AI-Assisted, and AI-Led Teams on Assessing Research Reproducibility in Quantitative Social Science (Consortium 2026). Proceedings of the National Academy of Sciences, 123 (22) e2524747123
Quan Qi#, Yukang Xue#, Najm A. Madani, Randy Tangang, Fangqun Yu, Arshad A. Nair, Xiaobo Romeiko Xue, Gan Luo, Isa Brackett, Chris Thorncroft, and Shao Lin (2025). Individual Effects and Interactions Between Ultrafine Particles and Extreme Temperatures on Hospital Admissions of High Burden Diseases. Environment International, 109348
Shao Lin, Yukang Xue, Sathvik Thandra, Quan Qi, Sally W. Thurston, Daniel P. Croft, Mark J. Utell, Philip K. Hopke, and David Q. Rich (2025). Source Specific Fine Particles and Rates of Asthma and COPD Healthcare Encounters Pre-and Post-implementation of the Tier 3 Vehicle Emissions Control Regulations. Journal of Hazardous Materials, 136737
Shao Lin#, Quan Qi#, Han Liu, Xinlei Deng, Ian Trees, Xiaojun Yuan, Mary P. Gallant (2024). The Joint Effects of Thunderstorms and Power Outages on Respiratory-related Emergency Visits and Modifying and Mediating Factors of This Relationship. Environmental Health Perspectives, 132(6):67002
Quan Qi, Fangqun Yu, Arshad A. Nair, Sam S. S. Lau, Gan Luo, Imran Mithu, Wangjian Zhang, Sean Li, Shao Lin (2024). Hidden Danger: The Long-term Effect of Ultrafine Particles on Mortality and Its Sociodemographic Disparities. Journal of Hazardous Materials, 134317
Shao Lin#, Yukang Xue#, Sathvik Thandra, Quan Qi, Philip K. Hopke, Sally W. Thurston, Daniel P. Croft, Mark J. Utell, David Q. Rich (2024). 𝑃𝑀2.5 and Its Components and Respiratory Disease Healthcare Encounters - Unanticipated Increased Exposure-response Relationships in Recent Years After Environmental Policies. Environmental Pollution, 124585
Arshad A. Nair, Shao Lin, Gan Luo, Ian Ryan, Quan Qi, Xinlei Deng, Fangqun Yu (2023). Environmental Exposure Disparities in Ultrafine Particles and 𝑃𝑀2.5 by Urbanicity and Sociodemographics in New York State, 2013-2020. Environmental Research, 239: 117246
Selected Work in Progress
Selected Work in Progress
Global Capital and Local Health: Evidence from Foreign Direct Investment into the United States, with Chun-Yu Ho and Haruka Takayama
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