{"classes":[{"categories":[{"measurements":[{"groupId":"OG000","value":"46"},{"groupId":"OG001","value":"14"}]}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"74"},{"groupId":"OG001","value":"75"}],"units":"Participants"}],"description":"Proportion of patients achieving Hct control at Week 28 was defined by the absence of phlebotomy eligibility starting at Week 8 and continuing through Week 28, with no more than one phlebotomy eligibility occurring post randomization and prior to Week 8.\n\nPhlebotomy eligibility was defined by:\n\n* Confirmed Hct \\> 45% that is at least 3 percentage points higher than the Hct obtained at Baseline Or\n* Confirmed Hct \\> 48% The confirmation occurred 2 to 14 days subsequent to the initial observation.","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 28","title":"Number of Participants Achieving Hematocrit (Hct) Control at Week 28","type":"PRIMARY","unitOfMeasure":"Participants"}