Data collection
A structured assessment employing the BARF scale was administered twice to the patients or their caregivers during the acute and delayed phases, respectively. After obtaining official permission from the Institutional Review Board (IRB) at King Fahad Medical City (KFMC), the patient or guardian was initially approached by a familiar healthcare professional (a physician, nurse, or pharmacist) to explain the study, details of participation, and the potential value of the survey results. The patient/guardian was then provided with a patient information sheet and a consent form and provided with sufficient time to decide whether to participate in the assessment. The questionnaire was administered to the guardian/attendant if the child was <8 years old with due input from the child, while the assessment was obtained directly from the children aged between 8 and 14 years with parents’ input. Subsequently, the patient was provided with the BARF and educated on how to use it. For inpatients, the assessment was performed two separate times: the first was conducted 1-day post-chemotherapy to assess for acute CINV, and the second was done 2–5 days post-chemotherapy to assess for delayed CINV. For outpatients, the assessment was given to the patient/caregiver during their visit and completed via telephonic conversation.