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Table 1 Characteristics of F-PACK participants stratified for APOE4 status. Data are reported as median and range (minimum to maximum) for continuous variables, and numerical for categorical variables. N = 65: ε2ε3 N = 5; ε2ε4 N = 1; ε3ε3 N = 29; ε3ε4 N = 28; ε4ε4 N = 2

From: Longitudinal APOE4- and amyloid-dependent changes in the blood transcriptome in cognitively intact older adults

 

APOE4 non-carrier

(N = 34)

APOE4 carrier

(N = 31)

Statistics

Sex (male/female)

17/17

18/13

Χ2 = 0.16, p = 0.69

BDNF 66 met carriers (N)

18

16

Χ2 = 0, p = 1

Age (years)

68 (56–80)

69 (56–80)

T =  − 0.42, p = 0.68

Education (years)

14 (8–20)

16 (9–23.5)

T = 2.17, p = 0.03

MMSE

29.5 (27–30)

30 (28–30)

W = 555.5, p = 0.68

CDR

0

0

NA

AVLT TL (/75)

46 (31–68)

46 (35–68)

T = 0.32, p = 0.75

AVLT %DR

82.6 (30–107.7)

84.6 (58.3–107.7)

W = 550, p = 0.77

BSRT TR (/12)

7.7 (5.6–10.8)

7.8 (4.9–10.3)

T =  − 0.74, p = 0.46

BSRT DR (/12)

8 (2–12)

8 (3–12)

W = 481.5, p = 0.55

BNT (/60)

57 (46–60)

57 (41–60)

W = 530, p = 0.97

AVF (# words)

24 (16–33)

24 (18–38)

T = 0.78, p = 0.44

LVF (# words)

35 (14–65)

38 (9–61)

T = 0.72, p = 0.47

PALPA49 (/30)

28 (20–30)

27 (23–29)

W = 468, p = 0.43

RPM (/60)

45 (22–57)

45 (22–57)

W = 515.5, p = 0.88

TMT B/A

2.3 (1.3–4.8)

2.4 (1.0–4.8)

T =  − 0.22, p = 0.83

Baseline Centiloid

4.6 (− 13.1–99.8)

7.7 (− 14.8–116.8)

W = 620, p = 0.23

Baseline amyloid positivity (N)

3 (8.8%)

4 (12.9%)

Χ2 = 0.02, p = 0.90

Follow-up Centiloid

3.1 (− 16.8–126.9)

7.9 (− 13.4–182.8)

W = 666, p = 0.07

Follow-up amyloid positivity (N)

3 (8.8%)

6 (19.4%)

Χ2 = 0.75, p = 0.39

Time interval (years)

5.7 (4.4–8.6)

4.5 (3.4–7.2)

W = 272, p = 0.0008

Amyloid rate of change

 − 0.15 (− 2.8–4.1)

0.86 (− 2.6–13.8)

W = 672, p = 0.06

Amyloid accumulators (N)

5 (14.7%)

7 (22.6%)

Χ2 = 0.25, p = 0.62

  1. Abbreviations: AVF Animal Verbal Fluency Test, AVLT TL/DR Rey Auditory Verbal Learning Test total learning/delayed recall, BDNF brain-derived neurotrophic factor, BNT Boston Naming Test, BSRT TR/DR Buschke Selective Reminding Test total retention/delayed recall, CDR Clinical Dementia Rating scale, LVF Letter Verbal Fluency Test, MMSE Mini Mental State Examination, PALPA49 Psycholinguistic Assessment of Language Processing in Aphasia (PALPA) subtest 49, RPM Raven’s Progressive Matrices, TMT B/A Trail Making Test part B divided by part A