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Table 1 Contributing Centenarian Studies

From: ICC-dementia (International Centenarian Consortium - dementia): an international consortium to determine the prevalence and incidence of dementia in centenarians across diverse ethnoracial and sociocultural groups

Study Setting Sample of centenarians Age range Females (%) Race/Ethnicity Start/end date Reference Centenarians per 100,000 people (year of estimate)
Sydney Centenarian Study (SCS)a Sydney, Australia 345+ 95–106 72 Caucasian 2008-ongoing [48] 18.75 (2010) [55]
New England Centenarian Study (NECS) Boston, USA 1500+ 100–119 76 Caucasian 1994-ongoing [56, 57] 22.6 (2014) [58]
Georgia Centenarian Study (GCS) Georgia, USA 381 98–110 82 Caucasian African American 1988–2009 [59] 22.6 (2014) [58]
Tokyo Centenarian Study (TCS)a Tokyo, Japan 304 100–108 79 Japanese 2000–2002 [20, 45, 60] 42.76 (2013) [61]
Swedish Centenarian Study (SwCS)a Southern Sweden 100 100–101 82 Caucasian 1987–1992 [39] 20.1 (2014/15) [62]
Gothenburg 95+ Study (Go95+)a Gothenburg, Sweden 1020 95–109 82 Caucasian 1996–2015 [63] 20.1 (2014/15) [62]
90+ Study (90+)a California, USA 960 95–107 79 Caucasian 2003–2007 [64] 22.6 (2014) [58]
Cognitive Function and Aging Study (CFAS) England and Wales, UK 700 95–100+ NA Caucasian 1991–1994 [65] 21.49 (2013) [66]
Longevity Gene Project (LGP)a New York, USA 462+ 95–110 75 Caucasian 1998-ongoing [67] 22.6 (2014) [58]
Five Country Oldest Old Project (5COOP) Montpellier, France 1241 100 80 Danish (251), French (211), Japanese (337), Swedish (274), Swiss (168) 2011–2014 Personal correspondence NA
Polish Centenarian Study (PCS)a Katowice, Poland 86+ 99–105 81 Caucasian 2007-ongoing [68, 69] 8.015 (2010) [70]
Spanish Centenarian Study (SpCS) Valencia, Spain 47+ 98–107 74 Caucasian 2010-ongoing [71] 26.44 (2013) [72]
Oregon Brain Aging Study (OBAS) Oregon, USA 156+ 55–111 60 299 Caucasian, 2 Native American, 3 Asian 1989-ongoing [73] 22.6 (2014) [58]
Monzino 80+ Study (M80+) Varese Province, Italy 542+ 95–107 71 Caucasian 2002-ongoing [74] 29.42 (2014) [75]
Hong Kong Centenarian Study (HKCS) Hong Kong 153 95–108 78 Chinese 2009–2011 [7678] 26.73 (2011) [79]
Centenarians at Trieste (CaT) Trieste, Italy 100+ 100+ 90 Caucasian 2014-ongoing [80] 29.42 (2014) [75]
The 100+ Study (100+) Amsterdam, The Netherlands 133+ 100–115 75 Caucasian 2013-ongoing Personal correspondence 12.4 (2014) [81]
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