Physicians-in-training are not prepared to prescribe medical marijuana.

Background: While medical marijuana use is legal in more than half of U.S. states, evidence is limited about the preparation of physicians-in-training to prescribe medical marijuana.

The significant impact of education, poverty, and race on Internet-based research participant engagement.

Purpose: Internet-based technologies are increasingly being used for research studies. However, it is not known whether Internet-based approaches will effectively engage participants from diverse racial and socioeconomic backgrounds.

Methods: A total of 967 participants were recruited and offered genetic ancestry results.