TABLE 7.
Distribution of β-Amyloid Pathology
| Age at Death (Years) | Thal β-Amyloid Phase (3) n (Percent of Subjects of the Same Age Group) | ||||||
|---|---|---|---|---|---|---|---|
| n | 0 | 1 | 2 | 3 | 4–5 | 1–5 | |
| 50–59 | 28 | 23 (82) | 5 (18) | 5 (18) | |||
| 60–69 | 66 | 43 (65) | 17 (26) | 2 (3) | 4 (6) | 23 (35) | |
| 70–79 | 89 | 52 (58) | 30 (34) | 2 (2) | 2 (2) | 3 (3) | 37 (42) |
| 80–89 | 93 | 35 (38) | 41 (44) | 6 (6) | 11 (12) | 51 (55) | |
| ≥90 | 20 | 4 (20) | 8 (40) | 1 (5) | 4 (10) | 3 (15) | 16 (80) |
| All subjects | 296 | 157 (53) | 101 (34) | 5 (2) | 12 (4) | 21 (7) | 131 (44) |
n, number; Spearman correlation Thal β-amyloid phase/age: r = 0.32, p = 0.0001.