The rаndоmized cоntrоlled triаl investigаted an intervention aimed at increasing patients’ control of their blood sugar. The patients were children with type I diabetes, ages 5 through 14. The trial was conducted in the pediatric endocrinology clinic of a large, urban academic health center. A nurse practitioner at a small, rural clinic wondered whether the study’s intervention could apply to the treatment of her elderly patients. What term in research represents the nurse practitioner’s question?