Early evidence suggested that accountable care organizations (ACOs) could improve health
care quality while constraining costs, and ACOs are expanding throughout the United States…

Background— Cardiovascular disease is often studied through patient self-report and
administrative data. However, these 2 sources provide different information, and few studies have …

Background: There is considerable regional variation in Medicare outpatient visit rates;
such variations may be the consequence of patient health, race/ethnicity differences, patient …

Background Proposed payment reforms in the US healthcare system would hold providers
accountable for the care delivered to an assigned patient population. Annual hemoglobin A1c …

Creating local population health measures from administrative data would be useful for health
policy and public health monitoring purposes. While a wide range of options – from simple …

… Therese Stukel, Laura Yasaitis, Dennis Ko and Amitabh Chandra interpreted the data.
Laura Yasaitis drafted the manuscript. All of the authors revised the manuscript critically for …

Objectives: This dissertation comprises three essays on geographic variations in healthcare,
and the association between utilization and health outcomes. I first explore associations …

Since 2002, the average number of questions asked per respondent in the Health and
Retirement Study (HRS) has risen by 39 percent, from 413 to 581. Yet there is little or no …

As health care spending continues to strain government and household budgets, there is
increasing interest in measuring whether the incremental dollar spent on health care is worth it. …

… Laura Yasaitis and Atul Gupta contributed equally to this work. Era Kim is an employee of
UnitedHealthcare. Lee Newcomer is a former employee of UnitedHealthcare and owns stock …