{"classes":[{"categories":[{"measurements":[{"groupId":"OG000","lowerLimit":"7.09","upperLimit":"29.58","value":"11.63"},{"groupId":"OG001","lowerLimit":"7.03","upperLimit":"28.21","value":"13.70"},{"groupId":"OG002","lowerLimit":"5.65","upperLimit":"20.89","value":"13.25"}]}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"37"},{"groupId":"OG001","value":"94"},{"groupId":"OG002","value":"44"}],"units":"Participants"}],"description":"Methotrexate plasma concentration-time data are collected after the start of methotrexate infusion in induction cycle 1. Population parameters and inter-subject variability are estimated. Individual estimates of methotrexate volume of central compartment are obtained using post hoc analysis.","dispersionType":"Full Range","groups":[{"description":"Patients with gross total resection (GTR)/no evidence of metastatic disease (M0) medulloblastoma, nodular desmoplastic histology, or high grade glioma","id":"OG000","title":"Low-Risk Group"},{"description":"Patients with no evidence of metastatic disease (M0) medulloblastoma or nodular desmoplastic histology with less than a gross total resection (GTR), other histologic diagnoses with no metastatic disease","id":"OG001","title":"Intermediate-Risk Group"},{"description":"Patients with central nervous system (CNS) metastatic disease","id":"OG002","title":"High-Risk Group"}],"paramType":"MEDIAN","populationDescription":"Eligible patients who received methotrexate during induction cycle 1 and had samples collected for PK analysis.","reportingStatus":"POSTED","timeFrame":"Pre-infusion and 6, 23, 42, 66 hours from start of MTX","title":"Methotrexate Volume of Central Compartment in Induction Cycle 1","type":"SECONDARY","unitOfMeasure":"L/m^2"}