A new study in JAMA Network Open found that almost all Medicaid managed care plans (MCPs) cover at least one of the four formulations of naloxone. Eighty percent of Medicaid recipients, which include more than 70 million people, are enrolled in these plans. The study is the first to assess naloxone coverage within MCPs.

Ingroup bias happens when people give preferential treatment to others they believe belong to their group. The group could be anything -- gender-based, religious, a fellow fan of the same sports team. What matters is the perception of a shared identity that creates a sense of trust and disarms scrutiny. As a new paper discovers, it also included marine vessel inspectors with shared nationality.