Figure 1. The process of selecting the study population. Patient demographics BMI: body mass index, FRI: fracture-related infection within 90 days following injury, NRS: numeric rating scale. *Classification of open fractures is indicated by the number of fractures, and there are duplicate cases. ** Patients with fractures of the femur, tibia, or fibula were classified as “lower extremity” even if accompanied with an upper extremity fracture
