{"classes":[{"categories":[{"measurements":[{"groupId":"OG000","value":"91.8"},{"groupId":"OG001","value":"92.3"}]}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"1959"},{"groupId":"OG001","value":"1964"}],"units":"Participants"}],"description":"Percentage of patients alive","groups":[{"description":"Patients receive oral letrozole once daily for up to 5 years.\n\nLetrozole: Letrozole 2.5 mg taken orally once daily for 5 years","id":"OG000","title":"Group 2 Letrozole"},{"description":"Patients receive oral placebo once daily for up to 5 years.\n\nPlacebo: Placebo tablet taken orally once daily for 5 years","id":"OG001","title":"Group 1 Placebo"}],"paramType":"NUMBER","populationDescription":"Patients with any type of follow up.","reportingStatus":"POSTED","timeFrame":"7 years","title":"Overall Survival","type":"SECONDARY","unitOfMeasure":"percentage of patients alive"}