Age (month) | Cre | N | Aβ40 (pg/mg brain) | Aβ42 (pg/mg brain) | ratio 40/42 | ||||
---|---|---|---|---|---|---|---|---|---|
 |  |  | Average | STDEV.P | P -value | Average | STDEV.P | P -value |  |
8 | - | 3 | 1,257 | 1,022 | 0.40 | 271 | 193 | 0.45 | 4.6 |
 | + | 3 | 481 | 315 |  | 142 | 75 |  | 3.4 |
9 | - | 17 | 2,024 | 1,192 | 0.90 | 399 | 192 | 0.71 | 5.1 |
 | + | 12 | 2,074 | 746 |  | 421 | 116 |  | 4.9 |
15 | - | 4 | 4,235 | 946 | 0.65 | 1,015 | 104 | 0.74 | 4.2 |
 | + | 4 | 4,582 | 823 |  | 972 | 188 |  | 4.7 |
16 to 18 | - | 4 | 4,445 | 1,135 | 0.74 | 971 | 181 | 0.79 | 4.6 |
 | + | 5 | 4,830 | 1,777 |  | 1,020 | 289 |  | 4.7 |