Participants
SECONDARY
Eligible participants were younger than 22 years and were admitted to a pediatric unit (ie, general pediatric wards; subspecialty wards; pediatric critical care units, including the pediatric intensive care unit and the pediatric cardiology intensive care unit; and the neonatal intensive care unit) at MCJCHV during the study period. Patients admitted under observation status, same-day surgery, or other admission categories were not eligible unless their status was changed to inpatient. Patients who were discharged or had a diagnosis of HA-VTE prior to randomization were excluded. Enrolled patients who were discharged from the hospital and subsequently readmitted during the study period remained eligible and were rerandomized. The primary analysis included all admissions during the study period, while a secondary sensitivity analysis included only the first admission for each patient.