{"classes":[{"categories":[{"measurements":[{"groupId":"OG000","lowerLimit":"61","upperLimit":"84","value":"74"},{"groupId":"OG001","lowerLimit":"65","upperLimit":"87","value":"79"}]}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"64"},{"groupId":"OG001","value":"61"}],"units":"Participants"}],"description":"Percentage of EFS patients. This is measured as the time from study entry until disease progression, disease recurrence, occurrence of a second malignant neoplasm, or death from any cause. To measure Event Free Survival, repeated one-sided logrank tests will be performed The upper critical values are based on the one-sided alpha-spending functions of t2 (alpha=0.05) and the lower critical values are based on testing the alternative hypothesis at 0.005 level.","dispersionType":"95% Confidence Interval","groups":[{"description":"In courses 1-3, patients receive doxorubicin hydrochloride (30 mg/m2) IV over 15 minutes, vincristine sulfate (1.5 mg/m2 (maximum dose 2 mg)) IV, and methotrexate intrathecally (age-adjusted dosing) (IT) on day 1 and oral prednisone (40 mg/m2/day) three times daily and oral mercaptopurine (225 mg/m2) once daily on days 1-5. In courses 4 and 5, patients receive doxorubicin (30 mg/m2), vincristine sulfate (1.5 mg/m2 (Maximum dose 2 mg)), prednisone (120 mg/m2/day), and mercaptopurine (225 mg/m2) as in courses 1-3. In courses 6-15, patients receive vincristine sulfate (1.5 mg/m2), prednisone (120 mg/m2/day), and mercaptopurine (225 mg/m2) as in courses 1-3 and methotrexate (60 mg/m2) IV on day 1. Treatment repeats every 21 days for up to 15 courses in the absence of disease progression or unacceptable toxicity.","id":"OG000","title":"Standard (APO) With Vincristine (Arm I)"},{"description":"In courses 1-3, patients receive doxorubicin hydrochloride (30 mg/m2) IV, methotrexate (age adjusted dosing) IT, prednisone (120 mg/m2/day), and mercaptopurine (225 mg/m2) as in arm I and vinblastine sulfate (4 mg/m2) IV over 1 minute on days 1, 8, and 15. In courses 4 and 5, patients receive doxorubicin hydrochloride (30 mg/m2) IV, prednisone (120 mg/m2/day), and mercaptopurine (225 mg/m2) as in arm I and vinblastine sulfate (4 mg/m2) as in arm II (courses 1-3). In courses 6-15, patients receive prednisone (120 mg/m2/day) and mercaptopurine (225 mg/m2) as in arm I, vinblastine sulfate (4 mg/m2) IV as in arm II (courses 1-3), and methotrexate (60 mg/m2) IV on day 1. Treatment repeats every 21 days for up to 15 courses in the absence of disease progression or unacceptable toxicity.","id":"OG001","title":"Consolidation (Includes Vinblastine) (Arm II)"}],"paramType":"NUMBER","populationDescription":"64 patients from Arm I were analyzed for this outcome measure, one patient was deemed ineligible. 61 patients from Arm II were analyzed for this outcome measure, three patients were deemed ineligible.","reportingStatus":"POSTED","timeFrame":"From first enrollment up to 3 years.","title":"Event-free Survival (EFS)","type":"PRIMARY","unitOfMeasure":"percentage of participants"}