{"classes":[{"categories":[{"measurements":[{"groupId":"OG000","value":"100"},{"groupId":"OG001","value":"188"}]}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"34304"},{"groupId":"OG001","value":"34253"}],"units":"Participants"}],"description":"Ovarian cancer deaths confirmed in participants by a death review committee if available, otherwise by death certificate.","groups":[{"description":"Participants receive standard medical care.","id":"OG000","title":"Control"},{"description":"Participants undergo blood sample collection for CA-125 analysis at baseline annually for 5 years. Participants also undergo an OVR (discontinued in December 1998) and TVU at baseline and annually for 3 years.","id":"OG001","title":"Ovarian Screening"}],"paramType":"NUMBER","reportingStatus":"POSTED","timeFrame":"Events through 13 years of follow-up or through December 31, 2009; median follow-up 11.9 years.","title":"Ovarian Cancer Deaths (Including Primary Peritoneal and Fallopian Tube Cancers)","type":"PRIMARY","unitOfMeasure":"Participants"}