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Table 2 Demographic, metabolic and cognitive sample characteristics

From: Associations of the metabolic syndrome and its components with cognitive impairment in older adults

  Means ± SD, median (interquartile range) or n of total N = 202 analysis sample % of N
Study site
 UMC Utrecht, n (%) 33 16.3%
 Charité Berlin Campus Virchow, n (%) 114 56.4%
 Charité Berlin Campus Mitte, n (%) 55 27.2%
Male, n (%) 121 59.9%
Age, years, mean ± SD 72.12 ± 4.74  
Smoking history, n (%)
 Missing 28 13.9%
 Never smokers 54 26.7%
 Former smokers 93 46.0%
 Current smokers 27 13.4%
History of coronary heart disease, n (%) 28 13.9%
History of stroke, n (%) 9 4.5%
History of transient ischemic attack, n (%) 6 3.0%
History of diabetes, n (%) 39 19.3%
 Non-insulin dependent diabetes, n (%) 23 11.4%
 Insulin-dependent diabetes, n (%) 16 7.9%
History of dyslipidemia, n (%) 40 19.8%
Body mass index (BMI; kg/m2), mean ± SD 27.12 ± 4.39  
Serum glucose (mmol/L), median (interquartile range) 5.77 (5.27–6.49)  
HbA1ca (mmol/mol), mean ± SD 39.68 ± 8.20  
Triglycerides (TG) (mmol/L), median (interquartile range) 1.31 (1.04–1.79)  
Total cholesterola (mmol/L), mean ± SD 4.88 ± 1.12  
Low-density lipoproteina (LDL-C) (mmol/L), mean ± SD 3.11 ± 0.98  
High-density lipoprotein (HDL-C) (mmol/L), mean ± SD 1.27 ± 0.43  
BMI categories, n (%)
  Underweight (BMI ≤ 18.5 kg/m2), n (%) 2 1.0%
  Normal/overweight (BMI 18.6–29.9 kg/m2), n (%) 155 76.7%
  Obesity (BMI ≥30 kg/m2), n (%) 45 22.3%
Elevated blood pressureb, n (%) 123 60.9%
Elevated fasting glucoseb, n (%) 125 61.9%
Elevated TGb, n (%) 60 29.7%
Reduced HDL-Cb, n (%) 69 34.2%
Metabolic syndrome (MetS)b, n (%) 72 35.6%
Number of MetS componentsb
 0 27 13.4%
 1 41 20.3%
 2 62 30.7%
 3 41 20.3%
 4 21 10.4%
 5 10 5.0%
Factor of global ability g, mean ± SD −0.06 ± 1.01  
Mini Mental State Examination (MMSE)a, median (interquartile range) 29 (28–30)  
MMSE< 27a, n (%) 12 6.0%
  1. afor HbA1c, N = 155; for total cholesterol, N = 158; for LDL-C, N = 157; for MMSE, N = 200
  2. bfor definition, see Table 1