State versus federal health insurance marketplaces: A bigger deal for Medicaid and a smaller deal for the individual mandate.

States retain significant power over key components of Affordable Care Act implementation. Using data from the US Census from 2010 to 2018, we examine how states' decisions to either establish state-run marketplaces or to default to the federal marketplace influenced the distribution of health insurance types within states. We find, somewhat counterintuitively, that state-based marketplaces are associated with greater change in enrollment for Medicaid compared to the federal marketplace.

The Effect of Sorority Membership on Eating Disorders, Body Weight, and Disordered-Eating Behaviors.

Eating disorders are currently the deadliest mental disorder in the United States, affecting an estimated 12%-25% of all college women. Previous research has found a positive correlation between sorority membership and eating disorders, but the causal link has not been firmly established. We contribute to the literature by investigating a possible causal link among sororities and diagnosed eating disorders, measurable weight outcomes, and disordered-eating behaviors using data from the American College Health Association Survey.

The impact of health information technology adoption by outpatient facilities on pregnancy outcomes.

Objective: Examine whether health information technology (HIT) at nonhospital facilities (NHFs) improves health outcomes and decreases resource use at hospitals within the same heath care network, and whether the impact of HIT varies as providers gain experience using the technologies.

Data Sources: Administrative claims data on 491,832 births in Pennsylvania during 1998-2004 from the Pennsylvania Health Care Cost Containment Council and HIT applications data from the Dorenfest Institute.

Study Design: Fixed-effects regression analysis of the impact of HIT at NHFs on adverse birth outcomes and resource use.