{"classes":[{"categories":[{"measurements":[{"groupId":"OG000","lowerLimit":"70","upperLimit":"77","value":"73.60"},{"groupId":"OG001","lowerLimit":"85","upperLimit":"90","value":"87.50"}]}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"1693"},{"groupId":"OG001","value":"1694"}],"units":"Participants"}],"description":"DFS events included loco-regional or distant recurrence of breast cancer, development of contralateral breast cancer or second non-breast malignancy other than basal or squamous carcinoma of the skin and carcinoma in situ of the cervix, or death from any cause. The percentage of participants free of DFS events (i.e., the DFS rate) and corresponding 95% CI were estimated by Kaplan-Meier analysis based on available data at the time of the 1-year median follow-up analysis. The analysis of the Herceptin 2-Year Arm against the Observation Arm after 1-year median follow-up, as reported below, was performed for an IDMC in 2005 at a time the Sponsor was blinded. The analysis of the Herceptin 1-Year Arm against the Observation Arm was performed by the Sponsor in 2006 following database cleaning. Therefore, these data are reported under a separate Outcome Measure.","dispersionType":"95% Confidence Interval","groups":[{"description":"Participants who completed definitive surgery and systemic adjuvant chemotherapy were observed for efficacy and safety until 10 years from individual randomization and for survival until 10 years after enrollment of the last participant. No Herceptin was provided.","id":"OG000","title":"Observation Arm"},{"description":"Participants who completed definitive surgery and systemic adjuvant chemotherapy received a loading dose of Herceptin as 8 mg/kg via IV infusion on Day 1, followed by a maintenance dose of 6 mg/kg via IV infusion 3 weeks later and thereafter every 3 weeks for 2 years or until disease recurrence, whichever occurred first. Participants were observed for efficacy and safety until 10 years from individual randomization and for survival until 10 years after enrollment of the last participant.","id":"OG001","title":"Herceptin 2-Year Arm"}],"paramType":"NUMBER","populationDescription":"FAS Population. The \"Number of Participants Analyzed\" reflects the number with data for the endpoint.","reportingStatus":"POSTED","timeFrame":"Year 2","title":"DFS Rate According to Kaplan-Meier Analysis in Herceptin 2-Year Arm Compared to Observation: 1-Year Median Follow-Up","type":"PRIMARY","unitOfMeasure":"percentage of participants"}