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Table 1 Characteristics of participants in dataset 1

From: Proteomic profiling of circulating plasma exosomes reveals novel biomarkers of Alzheimer’s disease

Characteristic

Total sample (n = 40)

Controls (n = 20)

AD (n =20)

P value

Age, mean (SD)

67.5 (5.4)

66.8 (5.8)

68.2 (5.0)

0.43

Education year, mean (SD)

9.1 (2.6)

9.9 (3.0)

8.4 (1.9)

0.07

Women, no. (%)

20 (50.0)

10 (50.0)

10 (50.0)

1.00

APOE ε4 positive (%)

12 (30.0)

4 (20.0)

8 (40.0) *

0.03

MMSE score (SD)

23.9 (5.2)

28.9 (0.6)

19.0 (1.8) *

< 0.001

Aβ42 (pg/ml), mean (SD)

565.3 (250)

762.1 (175.5)

368.5 (126.4) *

< 0.001

P-tau181 (pg/ml), mean (SD)

86.2 (53.7)

58.6 (26.4)

113.8 (60.1) *

0.001

P-tau181/Aβ42, mean (SD)

0.20 (0.2)

0.08 (0.03)

0.32 (0.14) *

< 0.001

T-tau (pg/ml), mean (SD)

465.8 (185.8)

335.2 (89.3)

596.4 (179.0) *

< 0.001

  1. The values of age, education years, and MMSE are shown as mean (standard deviation)
  2. Abbreviations: AD, Alzheimer’s disease; , amyloid β; APOE ε4, apolipoprotein ε4; MMSE, Mini-Mental State Examination; P-tau, phosphorylated tau; SD, standard deviation; T-tau, total tau
  3. *P < 0.05 compared to controls