Table 1 describes the characteristics at follow-up for the four groups. As shown in the overall summary in the first data column of Table 1, at follow-up the average age for these 663 individuals was 60 years, 44% were female, 74% were of EA heritage, these participants had on average 13 years of education, and about half were currently employed. At the time of interview, almost half were married, a third were divorced, 9% were widowed and 13% were single (never married). These interviewed subjects rated both their current physical and mental health to be on average good (scored as 2 on a four-point scale from excellent to poor) and estimated their current memory to be about the same as most people their age (scored as a 2 on a three-point scale of better/same/worse).
