Background: Most persons with dementia have multiple chronic conditions; however, it is unclear whether co-existing chronic conditions contribute to health-care use and cost. Methods: Persons with dementia and >= 2 chronic conditions using the National Health and Aging Trends Study and Medicare claims data, 2011 to 2014. Results: Chronic kidney disease and ischemic heart disease were significantly associated with increased adjusted risk ratios of annual hospitalizations, hospitalization costs, and direct medical costs.
