{"denoms":[{"counts":[{"groupId":"BG000","value":"1"},{"groupId":"BG001","value":"0"},{"groupId":"BG002","value":"1"}],"units":"Participants"}],"groups":[{"description":"Participants are switched from their current opioid medication (oxycodone or morphine) to methadone. Participants receive oral methadone 2-3 times daily for 4 weeks.","id":"BG000","title":"Arm I: Opioid Rotation to Oral Methadone"},{"description":"Participants currently receiving oxycodone are switched to sustained-release (SR) morphine. Participants currently receiving morphine are switched to SR oxycodone. Participants receive either oral SR morphine or oxycodone 2-3 times daily for 4 weeks.","id":"BG001","title":"Arm II: Opioid Rotation to Another Long-acting Strong Opioid"},{"description":"Total of all reporting groups","id":"BG002","title":"Total"}],"measures":[{"classes":[{"categories":[{"measurements":[{"groupId":"BG000","value":"0"},{"groupId":"BG002","value":"0"}],"title":"<=18 years"},{"measurements":[{"groupId":"BG000","value":"1"},{"groupId":"BG002","value":"1"}],"title":"Between 18 and 65 years"},{"measurements":[{"groupId":"BG000","value":"0"},{"groupId":"BG002","value":"0"}],"title":">=65 years"}]}],"paramType":"COUNT_OF_PARTICIPANTS","title":"Age, Categorical","unitOfMeasure":"Participants"},{"classes":[{"categories":[{"measurements":[{"groupId":"BG000","value":"1"},{"groupId":"BG002","value":"1"}],"title":"Female"},{"measurements":[{"groupId":"BG000","value":"0"},{"groupId":"BG002","value":"0"}],"title":"Male"}]}],"paramType":"COUNT_OF_PARTICIPANTS","title":"Sex: Female, Male","unitOfMeasure":"Participants"},{"classes":[{"categories":[{"measurements":[{"groupId":"BG000","value":"1"},{"groupId":"BG002","value":"1"}]}],"title":"United States"}],"paramType":"NUMBER","title":"Region of Enrollment","unitOfMeasure":"participants"}]}