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Table 2 Subject demographics of the baseline AIBL cohort used for serum K and Rb analysis

From: Rubidium and potassium levels are altered in Alzheimer’s disease brain and blood but not in cerebrospinal fluid

  Healthy controls (n = 778) Mild cognitive impairment (n = 128) Alzheimer’s disease (n = 171) p-value
Age (years) 70.6 (7) 76.2 (7.6) 78.8 (8.6) <0.001
Females (%) 57.6 56.3 62.0 0.34
% APOE ε4 carriers 27.2 49.2 62.4 <0.001
CDR SOB 0.0 (0.1) 1.2 (0.8) 5.8 (2.9) <0.001
MMSE 28.9 (1.2) 26.2 (2.7) 18.9 (5.3) <0.001
  1. CDR SOB is the Clinical Dementia Rating Scale Sum of Boxes score used to stage dementia. MMSE is the mini-mental state examination questionnaire score. p-value calculated using a one-way ANOVA or chi-squared test for percentages