We analyze whether receiving care from higher-priced hospitals leads to lower mortality. We overcome selection issues by using an instrumental variable approach which exploits that ambulance companies are quasi-randomly assigned to transport patients and have strong preferences for certain...

Treatment intensity varies remarkably across physicians, yet the key drivers are not well understood. Meanwhile, the organization of healthcare is undergoing a secular transformation as physicians increasingly work in groups. This paper tests whether physicians' group affiliation matters for...

Ten percent of Black children in the U.S. spend time in foster care--twice the rate of white children. We estimate unwarranted disparities in foster care placement decisions, adjusting for differences in the potential for future maltreatment by leveraging the quasi-random assignment of cases to...

"Patient sorting can confound estimates of the returns to physician human capital. This paper compares nearly 30,000 patients who were randomly assigned to clinical teams from one of two academic institutions. One institution is among the top medical schools in the country, while the other...