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Table 1 Participant characteristics

From: Body mass index and two-year change of in vivo Alzheimer’s disease pathologies in cognitively normal older adults

Variable

Total

Tau PET

No. of individuals

194

45

Age at baseline, year (mean ± SD)

68.4 ± 8.1

70.3 ± 7.3

Female, No. (%)

102 (53)

25 (55.6)

Education, year, median (IQR)

12 (7)

12(4)

APOE ε4 carriers, No. (%)

35 (18.0)

8 (17.8)

Baseline BMI, kg/m2 (mean ± SD)

24.20 ± 3.01

24.5 ± 2.55

Vascular risk factor, No. (%)

 Diabetes mellitus

35 (18.0)

10 (22.2)

 Hypertension

87 (44.8)

21 (46.7)

 Hyperlipidemia

69 (35.6)

15 (33.3)

 Coronary heart disease

11 (5.7)

3 (6.7)

 Stroke

0

0

 TIA

1 (0.5)

1 (2.2)

VRS, median (IQR)

1 (0–2)

1 (0–2)

Alcohol use, No. (%)

 Never

98 (50.5)

25(55.6)

 Former

23 (11.9)

7 (15.6)

 Drinker

73 (37.6)

13 (28.9)

Smoking status, No. (%)

 Never

125 (64.4)

30 (66.7)

 Former

57 (29.4)

13 (28.9)

 Drinker

12 (6.2)

2 (4.4)

Lifetime physical activity, MET, median (IQR)

68.7 (57.2)

64.5 (42.1)

Cerebral Aβ deposition, SUVR

 Baseline global Aβ retention, median (IQR)

1.12 (0.11)

1.13 (0.11)

 Baseline Aβ positive (> 1.20), No, (%)

43 (22)

13 (28.9)

Global Tau deposition, SUVR

 Baseline Tau retention, median (IQR)

1.02 (0.14)

1.00 (0.16)

  1. Abbreviations: β-amyloid protein, IQR Interquartile range, MET metabolic equivalent, SD standard deviation, SUVR standardized uptake value ratio, VRS vascular risk score