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Physician-Induced Demand: Evidence from China’s Drug Price Zero-Markup Policy
Hanming Fang, Xiaoyan Lei, Julie Shi, Xuejie Yi, Aug 11, 2021We exploit the staggered rollout of China’s drug price zero-markup policy (ZMP) to study physician-induced demand in healthcare. Our results show that the drug expenses in the treatment hospitals dropped by 63 log points (47 percent) compared with those of the control group; however, the expenses for non-drug services were 28 log points (32 percent) higher in the treatment group than in the control group. Our results provide robust evidence for physician-induced demand.
Higher Education and Corporate Innovation
Dongmin Kong, Bohui Zhang, Jian Zhang, Jul 22, 2020This paper investigates the impact of higher education on corporate innovation using a difference-in-differences approach. We find that Chinese firms in skilled industries generate better innovation outcomes, especially firms headquartered in provinces with more science and engineering college graduates, young firms that are more likely to hire young graduates, and firms located near universities. Also, we show that technological innovation is a mechanism...
The Unintended Impacts of Agricultural Fires: Human Capital in China
Joshua Graff Zivin, Tong Liu, Yingquan Song, Qu Tang, Peng Zhang, Dec 25, 2019The practice of burning agricultural waste is ubiquitous around the world, yet the external human capital costs from those fires have been underexplored. Using data from the National College Entrance Examination (NCEE) and agricultural fires detected by high-resolution satellites in China from 2005 to 2011, this paper investigates the impacts of fires on cognitive performance...
Unequal School Enrollment Rights and Increased Inequality: The Case of Shanghai
Muyang Zhang, Jie Chen, Jan 03, 2018In Shanghai, housing entitlements with enrollment access to a good public primary school is associated with a 0.1-0.35 percentage point lower annual rental yield. This rental yield gap is the opportunity cost of securing such housing, which is within the affordability range of most middle-income families in Shanghai. This implies that, should there be no credit constraint for homeownership, children from middle-income families should have a higher likelihood of accessing better public education. We find, however, that the enrollment rights between homeowners and renters, together with the credit constraint to own a home, actually lowers the chance of children from middle-income families of attending better public schools relative to those children from families with high initial wealth. This resulting reduced intergeneration mobility exacerbates the social inequality in China.
What Do a Billion Observations Say about Distance and Relationship Lending?
Haoyu Gao, Hong Ru, Xiaoguang Yang, Nov 07, 2018Using big data of the locations of bank branches and borrowers in China, we document a non-trivial amount of distant lending. The inter-firm network helps banks collect soft information which facilitates the distant lending. We also use novel data of monthly internal loan rating changes to directly measure soft information and find that banks have better soft information and predict delinquent events more accurately for borrowers connected via the inter-firm network.
