Table 1.

Selected contemporary reports on the prevalence of multimorbidity in older individuals

Author Year	Population	No. of patients Age of patients	No. of chronic conditions Examined	Multimorbidity definition	Prevalence of multimorbidity	Top 3 chronic conditions
Salive 2013 [4]	2008 Fee-for-service Medicare beneficiaries	30,923,846 16.5 %<65 years	15	2 or more conditions	67%	Hypertension Hyperlipidemia Ischemic heart disease
Abad-Diez 2014 [5]	19 centers in Spain	72,815 ≥65 years	NA	2 or more conditions	67.5 %	NP
Rocca 2014 [6•]	Rochester Epidemiology Project	138,858 All ages	20	2 or more conditions	22.6 % all ages 77.3 % >65 years	Hypertension Hyperlipidemia Diabetes
Van den Buscche 2011 [7,8]	Policy holders in a national health insurance company in Germany	123,224 >65 years	46	3 or more conditions	62%	Hypertension Lipid disorders Chronic low back pain
Ward 2014 [9]	2012 National Health Interview Survey	34,525 Adults	10	2 or more conditions	25.9 % adults 30.8 % >65 years	NP
Lochner 2013 [10]	2010 Fee-for-service Medicare beneficiaries	31 million 17.1 %<65 years	15	2 or more conditions	68.4 %	NP
Ashman 2013 [11]	2009 National Ambulatory Medical Care Survey	28,693 Adults	13	2 or more conditions	37.6 % of total office visits by adults MCC	Hypertension Hyperlipidemia Diabetes
Barnett 2012 [12]	314 practices in Scotland	1,751,841 All ages	40	2 or more conditions	23.2 % overall 64.9 % 65–84 years 81.5 %>85 years	NP
St John 2014 [13]	Community dwelling adults in Manitoba	1751 >65 years	20	Divided into 0, 1–3, 4–6, >7	Mean conditions 4.4	NP
Bahler 2015 [14•]	Beneficiaries leading health insurer Switzerland	229,943 >65	22	2 or more conditions	76.6 %	NP
Kirchberger 2012[15]	Community dwelling adults in Augsburg Germany	4127 65–94 years	13	2 or more conditions	58.6	Hypertension Eye disease Heart disease

NP not provided