Table 1.
Descriptive statistics for sample demographics, white matter hyperintensities, and levels of the blood markers.
| N | Minimum | Maximum | Mean | SD | CV | |
|---|---|---|---|---|---|---|
| Age | 144 | 44 | 77 | 58.89 | 9.09 | 0.15 |
| Education | 144 | 12 | 20 | 15.91 | 2.61 | 0.16 |
| MMSE | 144 | 26 | 30 | 28.78 | 1.09 | 0.04 |
| Systolic BP (mm Hg) | 144 | 97.67 | 156.67 | 123.85 | 12.55 | 0.10 |
| Diastolic BP (mm Hg) | 144 | 60.00 | 106.67 | 76.06 | 7.51 | 0.10 |
| Cholesterol (mg/dL) | 142 | 119.00 | 318.00 | 202.30 | 38.67 | 0.19 |
| LDL (mg/dL) | 142 | 43.00 | 214.00 | 121.64 | 33.82 | 0.28 |
| HDL (mg/dL) | 142 | 26.00 | 106.00 | 55.46 | 14.96 | 0.27 |
| Folate (ng/l) | 143 | 5.40 | 42.30 | 18.57 | 5.04 | 0.27 |
| B12 (ng/l) | 143 | 158.00 | 1,200 | 560.88 | 258.39 | 0.46 |
| Homocysteine (μmol/l) | 141 | 5.10 | 30.50 | 9.43 | 3.08 | 0.33 |
| CRP (mg/l) | 142 | 0.12 | 46.44 | 3.50 | 5.85 | 1.67 |
| Frontal WMH (mm3) | 144 | 152.00 | 27216.00 | 1667.06 | 2728.32 | 1.64 |
| Parietal WMH (mm3) | 144 | 8.00 | 5712.00 | 274.21 | 592.74 | 2.16 |
| Temporal WMH (mm3) | 144 | 54.00 | 11156.00 | 1079.61 | 1378.56 | 1.28 |
| Occipital WMH (mm3) | 144 | 376.00 | 9892.00 | 2511.69 | 1899.02 | 0.77 |
MMSE- Mini-Mental State Examination; SD-standard deviation; CV-coefficient of variation (SD/Mean); BP – blood pressure; LDL – low-density lipoprotein; HDL – high-density lipoprotein; WMH – White Matter Hyperintensities.