The study included 22,051 children and adolescents from the PEP (Prevention Education Programme) Family Heart Study, a community-based observational study which was performed from 1994 to 2008 in Nuremberg, Germany. In each participant, the researchers measured blood pressure, body mass index (BMI), waist circumference (WC), waist-to-height ratio (WHtR), skinfold thickness (SFT) and percent body fat (%BF).