Among beneficiaries with close-to-full drug coverage , minorities were still less likely to adhere relative to Whites , OR = 0.61 ( 95 % CI 0.58-0 .64 ) for Hispanics , OR = 0.59 ( 95 % CI 0.57-0 .62 ) for Blacks and OR = 0.57 ( 95 % CI 0.47-0 .68 ) for Native Americans .