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Table 1 Demographic characteristics, including APOE -ε4 frequency, of the study groups a

From: Follow-up plasma apolipoprotein E levels in the Australian Imaging, Biomarkers and Lifestyle Flagship Study of Ageing (AIBL) cohort

Categories

HC

MCI

AD

P -value

Count, n

689

78

187

 

Age, yr

73.51 ± 6.78

77.97 ± 7.58

80.32 ± 7.79

<0.001 (one-way ANOVA)

Sex, M/F

285/404

37/41

76/111

0.556 (χ 2 test)

APOE-ε4-positive, %

26.9

41

68.4

<0.001 (χ 2 test)

  1. aAD, Alzheimer’s disease; APOE, Apolipoprotein E; HC, Healthy controls; MCI, Mild cognitive impairment. Values are mean ± standard deviation or ratio (%). Statistical analysis of age (in years) and sex of the participants was carried out using one-way analysis of variance (ANOVA), and APOE-ε4 genotype frequency was performed using the χ 2 test.