Table 1 Demographics

Age (years), mean (SD) and range

76.9 (8.5)

50–91

75.0 (6.7)

55–91

74.8 (6.1)

55–91

75.4 (8.0)

57–89

69.7 (9.8)^a

50–89

69.30 (9.2)^a

51–85

Follow-up duration (years), mean (SD) and range

2.8 (1.7)

0.5–7.7

4.0 (1.9)^a

1.2–8.7

4.1 (1.9)

1.2–8.7

3.8 (2.0)

1.2–7.0

3.2 (1.9)

0.5–7.8

3.46 (2.0)

1.0–7.7

Education (years), mean (SD) and range

14.4 (3.0)^b

4–20

15.7 (2.8)^a

10–20

15.9 (2.7)

10–20

15.3 (3.1)

12–20

15.3 (2.6)

10–20

15.6 (2.6)

10–20

Female sex, N (%)

135 (61)

35 (50)

25 (51)

10 (48)

39 (42)^c

16 (40)^c

Caucasian race, N (%)

202 (92)

67 (96)

47 (96)

20 (95)

86 (92)

37 (93)

SAGE baseline, mean (SD) and range (maximum score 22)

11.0 (4.4)

2–22

16.5 (3.1)^a

8–22

16.4 (3.1)

9–21

16.6 (3.2)

8–22

17.0 (3.3)^a

7–22

19.6 (2.0)^a

14–22

MMSE baseline, mean (SD) and range (maximum score 30)

22.1 (3.7)

9–30

26.0 (2.4)^a

19–30

26.0 (2.3)

19–30

26.2 (2.8)

20–30

27.4 (1.9)^a

21–30

28.5 (1.4)^a

23–30