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Table 1 Sub-cohort demographics

From: Alzheimer’s disease cerebrospinal fluid biomarkers are not influenced by gravity drip or aspiration extraction methodology

  HC MCI AD p - value
N 31 6 7  
Age (years) 71.8 (5.6) 68.3 (4.5) 71.3 (7.1) 0.40
Sex (F%) 58 % 50 % 28 % 0.41
APOEε4 % 19 % 0 % 43 % 0.20
MMSE (median IQR) 29 (1.5) 26 (2) 22 (3) <0.0001
CDR (median IQR) 0 (0) 0.5 (0) 1 (0.25) <0.0001
  1. p–value determined by t-test (age), Chi square analyses (APOEε4 and sex) and Kruskal-Wallis tests (CDR score and MMSE)
  2. N number, HC health control, MCI mild cognitive impairment, AD Alzheimer’s disease, APOEε4 apolipoprotein epsilon 4 allele, MMSE Mini–Mental State Examination, CDR Clinical Dementia Rating, IQR inter-quartile range