… has found that older American Indians experience higher levels … 54 percent of older American Indians have cognitive impairment, … to dementia in American Indians, with substantial overlaps … impairment among elder American Indians is highly prevalent, …… has found that older American Indians experience higher levels … 54 percent of older American Indians have cognitive impairment, … to dementia in American Indians, with substantial overlaps … impairment among elder American Indians is highly prevalent, …