{"classes":[{"categories":[{"measurements":[{"groupId":"OG000","value":"92.5"},{"groupId":"OG001","value":"89.7"}]}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"3122"},{"groupId":"OG001","value":"584"}],"units":"Participants"}],"description":"Measured at time from randomization to any distant cancer or death to determine percentage of patients distant disease free at 5 years. Sentinel node definition: Sentinel nodes are the first few lymph nodes into which a tumor drains. Sentinel node biopsy requires injecting a tracer material to help a surgeon locate sentinel nodes during surgery.","groups":[{"description":"Patients with initially negative sentinel node tumors blocks whose tumors, upon re-examination, were not found to have had occult metastases","id":"OG000","title":"Group 1: Negative Node Patients Without Occult Metastases"},{"description":"Patients with initially negative sentinel node tumor blocks whose tumors, upon re-examination, were found to have had occult metastases","id":"OG001","title":"Group 2: Negative Node Patients With Occult Metastases"}],"paramType":"NUMBER","populationDescription":"Data missing or unknown for some patients","reportingStatus":"POSTED","timeFrame":"From the time of randomization until 5 years","title":"Pathology Investigation of Sentinel Nodes in Sentinel Node Negative Patients to Identify a Group Who Were Potentially at Increased Risk of Systemic Recurrence","type":"SECONDARY","unitOfMeasure":"percentage distant disease free at 5 yrs"}