{"groups":[{"description":"Participants receive standard medical care.","id":"FG000","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":"FG001","title":"Ovarian Screening"}],"periods":[{"dropWithdraws":[{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"2"}],"type":"Cancer Before Rand. (Ovarian Screening)"},{"reasons":[{"groupId":"FG000","numSubjects":"1"},{"groupId":"FG001","numSubjects":"2"}],"type":"Died Before Randomization"},{"reasons":[{"groupId":"FG000","numSubjects":"73"},{"groupId":"FG001","numSubjects":"0"}],"type":"Died Before ASU (Control)"},{"reasons":[{"groupId":"FG000","numSubjects":"4807"},{"groupId":"FG001","numSubjects":"4851"}],"type":"No Ovaries at Baseline"},{"reasons":[{"groupId":"FG000","numSubjects":"311"},{"groupId":"FG001","numSubjects":"0"}],"type":"Refused ASU (Control)"},{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"3582"}],"type":"Refused Screen (Ovarian Screening)"}],"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"39111"},{"groupId":"FG001","numSubjects":"39105"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"33919"},{"groupId":"FG001","numSubjects":"30668"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"5192"},{"groupId":"FG001","numSubjects":"8437"}],"type":"NOT COMPLETED"}],"title":"Overall Study"}],"preAssignmentDetails":"Participants signed a study informed consent prior to being randomized to a study arm.","recruitmentDetails":"Participants were enrolled between November 1993 and July 2001 at 10 study centers."}