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专职教授
马芥
2016-10-18     (点击: )

马芥

邮箱:jiema@indiana.edu

教育背景

经济学博士, 印第安纳大学, 2016

经济学硕士,印第安纳大学, 2013

经济学本科, 中国人民大学, 2010

研究方向

健康经济学, 医疗卫生政策,应用计量经济学

发表论文

"Medicaid Coverage for Births after ACA’s Dependent Coverage”, with Yaa Akosa Antwi, Aaron Carroll, and Kosali Simon,

Research letter, New England Journal of Medicine, Jan 13, 2016

工作论文

“健康保险与生育决策:来自奥巴马医疗改革的证据”

Abstract: This study provides evidence of the impact of health insurance on fertility decisions in the context of young adults. The Affordable Care Act young adult provision has been shown to expand private health insurance coverage for the intended age group. Having health insurance improves access to family planning services and could reduce unintended pregnancy. The provision also induced private insurance to substitute Medicaid coverage during pregnancy. Using birth certificate data and a difference-in-differences study design, we examined the impact of the provision on fertility rates, prenatal care and birth outcomes by comparing the targeted group to slightly older adults. We found that the young adult provision reduced fertility rates by about 5% in the first 3 years following the policy change and increased the share of children born to unmarried, minority, or less educated mothers. The evidence also suggested that the provision encouraged earlier initiation of prenatal care and reduced maternal smoking and pregnancy complications. However, birth outcomes seemed to be non-responsive to the provision.

“医疗保险与预防:来自青年人群的证据”

Abstract: Ex ante moral hazard refers to the situation that people make inefficiently low investments in self-protective activities because of insurance coverage. However, in the context of health insurance, ex ante moral hazard is argued to be less of a concern due to utility loss from the uncompensated health outcome. The small existing empirical researches also find mixed evidence. This paper uses a regression discontinuity design to explore the effect of losing health insurance around age 19 on young adults’ health behaviors including smoking, drinking and exercising. The discontinuity of health insurance comes from young adults aging out of Medicaid coverage and private insurance dependent coverage. I use data from National Health Interview Survey (NHIS) from 1997 to 2012 to construct the sample. The analyses find evidence supporting the existence of ex ante moral hazard that the uninsurance rate increased by 4.04% (19.1 percentage increase to age 18 mean) at age 19 results in a reduction in smoking rate by 2.69% (15.2 percentage decrease).

“医疗保险的戒烟辅助与戒烟产品的使用” (with Kosali Simon)

Abstract: To examine the causal impact of Medicaid smoking cessation coverage on prescriptions for smoking deterrents. We examine state Medicaid coverage for four types of cessation interventions: nicotine replacement therapies (NRT), varenicline, bupropion and behavioral counseling. We utilized a ‘differences in differences’ technique with state and year fixed effects to assess the effect of Medicaid smoking cessation coverage on use of prescription cessation purchases. We find that having a complete deterrents coverage significantly increases the use of deterrents by 43.9%, mainly by encouraging the use of NRT and varenicline. Adding coverage for behavioral counseling beyond the complete coverage of deterrents has little impact on deterrents use.

研究课题

“医疗保险的扩张与处方药的使用”

教学经历

课程讲师:

统计分析, 2013秋季学期 & 2014暑期学期

初级宏观经济学, 2014秋季学期

初级微观经济学, 2014春季学期 & 2015春节学期

助教:

初级宏观经济学,2010秋季学期

统计分析, 2011春季学期

博弈论, 2011秋季学期 & 2012春季学期

中级微观经济学, 2012秋季学期 & 2013暑期学期

劳动经济学, 2012秋季学期

初级微观经济学, 2013 春季学期

会议报告

23rd Annual Meeting of Midwest Econometrics Group, Indiana Univ., Oct. 25-26, 2013

“医疗保险的戒烟辅助与戒烟产品的使用”

2015 Midwest Economics Association Annual Meeting, Minneapolis, Mar 27-29, 2015

“医疗保险与预防:来自青年人群的证据”

2015 Association for Public Policy Analysis and Management (APPAM) Fall Research Conference, Miami, FL; Nov 12-14, 2015

“健康保险与生育决策:来自奥巴马医疗改革的证据”

关闭窗口

版权所有:西安交通大学金禾经济研究中心 设计制作:西安交通大学数据与信息中心

地址:西安市咸宁西路28号西安交通大学文管大楼 邮编:710049 联系电话:82667879