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. 2021 Jun 7;11:344. doi: 10.1038/s41398-021-01362-2

Table 1.

Characteristics of Alzheimer’s disease and control participants.

Healthy controls (n = 42) Alzheimer’s disease (n = 40) Difference
Age(years) 81.27(2.48) 86.72(5.03) t = 6.270, p < 0.01
Sex (males/females) 19/23 23/17 χ2 = 1.233, p = 0.267
Oligomeric Aβ (OD value) 0.25(0.05) 0.40(0.10) t = 6.391, p < 0.01
Education (years) 11.30(3.59) 11.59(3.64) t = 0.363, p = 0.717
Body mass index 26.69(3.19) 25.45(3.72) t = 1.631, p = 0.107
Diabetes 7.10% 15% χ2 = 1.294, p = 0.255
Hypertension 61.90% 77.50% χ2 = 2.351, p = 0.125
Anti-hypertensive medication 60.00% 54.30% χ2 = 0.249, p = 0.618
Anti-hyperlipidemia medication 64.30% 50.00% χ2 = 1.709, p = 0.791
Current smoker 9.50% 5.00% χ2 = 0.618, p = 0.432
APOE*4 carriers 19% 37.50% χ2 = 3.457, p = 0.063
MMSE 28.21(1.58) 22.63(3.86) t = 8.557, p < 0.01

Continuous variables are expressed as means and standard deviations. Categorical variables are expressed as %.

APOE*4 apolipoprotein epsilon 4, MMSE Mini-mental state examination.