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Trends in (A) dementia incidence and (B) education and vascular risk factors over four non-overlapping epochs in the Framingham Heart Study. The baseline examination period was from 1977–1983 for the first epoch, 1986–1991 for the second epoch, 1992–1998 for the third epoch, and 2004–2008 for the fourth epoch. Data are from Satizabal et al.3 BP = blood pressure, HDL-C = high density liporptein cholesterol, high school = completion of high school education, Rx = treatment.
