{"classes":[{"categories":[{"measurements":[{"groupId":"OG000","value":"75"}],"title":"False Negative"},{"measurements":[{"groupId":"OG000","value":"691"}],"title":"True Negative"}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"766"},{"groupId":"OG001","value":"0"}],"units":"Participants"}],"description":"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":"Sentinel node resection immediately followed by axillary dissection\n\nconventional surgery: Sentinel node resection immediately followed by axillary dissection.","id":"OG000","title":"Arm I:Sentinel Node Resection+Conventional Axillary Dissection"},{"description":"Sentinel node resection followed by node examination then axillary dissection if positive sentinel node.\n\nSentinel node resection followed by node examination: Sentinel node resection followed by node examination then axillary dissection if positive sentinel node. No axillary dissection for negative sentinel node.","id":"OG001","title":"Arm II: Sentinel Node Resection Followed by Node Examination"}],"paramType":"COUNT_OF_PARTICIPANTS","populationDescription":"Data not collected for some patients. This analysis as pre-specified in the approved B-32 protocol required that both a SLN resection and an ALND be performed. The patients in Arm II were assigned to have no ALND so were excluded from the analysis.","reportingStatus":"POSTED","timeFrame":"At time of surgery (within 30 days of randomization)","title":"Sensitivity of the Sentinel Node to Determine Presence of Nodal Metastases.","type":"SECONDARY","unitOfMeasure":"Participants"}