{"classes":[{"categories":[{"measurements":[{"groupId":"OG000","value":"44"},{"groupId":"OG001","value":"5"}]}],"title":"Week 52"},{"categories":[{"measurements":[{"groupId":"OG000","value":"35"},{"groupId":"OG001","value":"2"}]}],"title":"Week 80"}],"denoms":[{"counts":[{"groupId":"OG000","value":"74"},{"groupId":"OG001","value":"75"}],"units":"Participants"}],"description":"Proportion of patients achieving a Hct control at Week 52 was defined by the absence of phlebotomy eligibility starting at Week 8 and continuing through Week 52, and no more than one phlebotomy eligibility occurring post randomization and prior to Week 8\n\n\\- Endpoint for Week 80 was defined, similarly.","groups":[{"description":"Ruxolitinib at a starting dose of 10 mg twice a day (bid). Dose was adjusted based on efficacy and safety parameters up to a maximum dose of 25 mg bid","id":"OG000","title":"Ruxolitinib"},{"description":"Best Available Therapy as selected by the investigator from: Hydroxyurea, Pegylated-Interferon (IFN/PEG-IFN), pipobroman, anagrelide, IMIDs, or observation. Participants randomized to BAT who did not respond by Week 28 were eligible to crossover and start treatment with ruxolitinib","id":"OG001","title":"Best Available Therapy (BAT)"}],"paramType":"COUNT_OF_PARTICIPANTS","populationDescription":"Full Analysis Set (FAS) included all participants to whom study treatment was assigned by randomization and had valid measurements for the outcome measure.","reportingStatus":"POSTED","timeFrame":"Week 52 and 80","title":"Number of Participants Achieving a Hematocrit (Hct) Control at Week 52 and Week 80","type":"SECONDARY","unitOfMeasure":"Participants"}