Table 3.

Distribution of centenarian probands versus U.S. national population by sex, race, and education

Group	Centenarian probands	Persons aged 90–94 in 1990*
Sex
Male	0.22	0.25
Female	0.78	0.75
Race
White	0.95	0.91
Non-White	0.05	0.09
Education
0–8 years	0.28	0.46
9–12 years	0.34	0.35
More than 12 years	0.38	0.19

^*For the category of education, years of education for the 1900 birth cohort was available from the U.S. census publication for the age group 85+ years (16). Education data for the age group 90–94 years (1895–1900 birth cohort) were kindly provided by Tori Velkoff, Chief of the Aging Studies Branch at the U.S. Census Bureau.