1. Medicare Advantage health care utilization: observation stays : trends in Medicare Advantage outpatient observation stays Author(s): Barrette, Kevin, authorMcGraves-Lloyd, Katharine, author Publication: Washington, DC, : Health Care Cost Institute, December 2016 Subject(s): Health Services -- utilizationHospitalization -- statistics & numerical dataHospitalization -- trendsLength of Stay -- statistics & numerical dataMedicare Part C -- statistics & numerical dataOutpatientsForecastingPatient Admission -- statistics & numerical dataPatient Readmission -- statistics & numerical dataHumansUnited States