Of the 22% of Medicare Advantage members who are familiar with the Centers for Medicare & Medicaid Services' (CMS') Star Ratings system, however only 15% of these members use Star Ratings to make health plan decisions overall (or about 49% of those who are familiar with the Star Ratings system). Moreover, just 32% understand how the system works. These findings were reported in "The HealthMine 2018-2019 Medicare Advantage Report." Researchers for HealthMine (from Survey Sampling International) queried 781 insured consumers aged 65 and above, who are enrolled in a Medicare Advantage Plan and have at least one chronic condition . . .