Author Affiliations: Department of Medicine, Yale University School of Medicine (Drs Tinetti and Fried), Yale University School of Public Health (Dr Tinetti); and Clinical Epidemiology Unit, VA Connecticut Healthcare System (Dr Fried), New Haven, Connecticut; and Department of Medicine, The Johns Hopkins University School of Medicine, and Department of Health Policy and Management, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland (Dr Boyd).
The most common chronic condition experienced by adults is multimorbidity, the coexistence of multiple chronic diseases or conditions. In patients with coronary disease, for example, it is the sole condition in only 17% of cases.1 Almost 3 in 4 individuals aged 65 years and older have multiple chronic conditions, as do 1 in 4 adults younger than 65 years who receive health care.2 Adults with multiple chronic conditions are the major users of health care services at all adult ages, and account for more than two-thirds of health care spending.2
Tinetti ME, Fried TR, Boyd CM. Designing Health Care for the Most Common Chronic Condition—Multimorbidity. JAMA. 2012;307(23):2493–2494. doi:10.1001/jama.2012.5265
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