Can a tape measure replace a scan? new study tests body shape tools in HIV

This pilot study will enroll 65 people living with HIV to see if two simple body shape calculations (the Body Roundness Index and A Body Shape Index) can accurately estimate how much body fat and visceral fat a person has. Participants will have their waist, height, and weight measured, and then get their actual body fat measured using ultrasound, a special scale, and an air-displacement chamber. The goal is to find a cheap, easy way to track fat changes in people with HIV without needing expensive equipment.