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Plasma Amyloid-beta Measures at Mid-Life and Late-life
| |
Mid-life |
Late-life |
|---|---|---|
| Mean age at blood draw (SD)* (years) |
63.6 (2.4) |
74.6 (2.4) |
| Median (IQR)* amyloid-beta 40 (pM) | 81 (43 − 178) | 79 (42 − 182) |
| Median (IQR)* amyloid-beta 42 (pM) | 9 (3 − 26) | 9 (3 − 23) |
| Median (IQR)* amyloid-beta 40:42 ratio | 8.3 (5.0 − 14.6) | 8.7 (4.9 − 17.0) |
SD = standard deviation. IQR = interquartile range.
