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. Author manuscript; available in PMC: 2015 Sep 1.
Published in final edited form as: Genes Immun. 2015 Jan 8;16(2):142–150. doi: 10.1038/gene.2014.73

Table 3.

Demographic characteristics of the four populations (after quality control)

Population Ancestry Samples after QC Cases Age of onset (mean ±SD) Controls Male Female
Asian 2 488 1 246 26.4 ± 0.3 1 242 245 2 243
European 7 248 3 842 33.6 ± 0.3 3 406 1 452 5 796
African 3 568 1 669 34.0 ± 0.3 1 899 713 2 855
Hispanic / Amerindians 2 247 1 457 29.5 ± 0.4 790 199 2 048
Total 15 551 8 214 7 337 2 609 12 942

Abbreviations: QC, quality control.

Populations: African ancestry includes 274 Gullah and 3 294 other African Americans; Hispanic/Amerindian ancestry includes 1 252 Hispanics and 995 Native Americans. Information for Age of onset was available for most of the cases in each population.