The overall objective is to assess the influences that repeated head impact accelerative events (both impact and nonimpact) and concussions have on high school athletes as measured by brain structure and function, cognition, and behavior.
5,000 transgender women are testing a LifeSkills Mobile intervention web-app to see if it helps reduce condomless sex, increase PrEP use, and decrease HIV infections over several years.
The aim is to find out how overall health and wellness is related to need for pain medication after surgery.
