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Table 1 Sample characteristics (mean ± SD)

From: Associations between locus coeruleus integrity and nocturnal awakenings in the context of Alzheimer’s disease plasma biomarkers: a 7T MRI study

  N = 72
Age (years) 65.2 ± 8.2
Sex (N) 37F/35M
Ethnicity Caucasian
Right-handed (N, %) 72 (100)
Body mass index (kg/m2) 25.5 ± 4.0
MMSE (score) 28.9 ± 1.2
APOE ε4 carriers (N, %) 21 (29)
Total tau (pg/ml) 2.5 ± 0.7
P-tau181 (pg/ml) 1.7 ± 0.5
40 (pg/ml) 228.9 ± 33.6
42 (pg/ml) 12.1 ± 2.3
Subjective sleep quality (total GSQS score) 3.3 ± 3.6
Nocturnal awakenings (self-reports) 1.8 ± 1.2