Table 2.
Demographic characteristics of the hypertensive and normotensive samples.
| Variable | Hypertensive (n=41) |
Normotensive (n=16) |
t | P |
|---|---|---|---|---|
| Age (years) | 52.4 (7.1) | 65.9 (3.9) | −7.2 | <.001 |
| Gender (% female) | 24 | 38 | χ2=.9 | Ns |
| Height (cm) | 173.5 (7.4) | 169.9 (8.4) | 1.6 | Ns |
| Weight (kg) | 88.9 (15.4) | 77.1 (17.7) | 2.6 | <.02 |
| BMI | 29.6 (4.8) | 26.5 (4.9) | 2.2 | <.04 |
| Systolic BP(mmHg) | 148 (11) | 126 (8) | 7.2 | <.001 |
| Diastolic BP(mmHg) | 95 (8) | 75 (7) | 8.4 | <.001 |
| Education (yrs) | 15 (2) | 16 (3) | −1.1 | Ns |
| Whole Brain Grey (cc)—PRE | 625.8 (75.7) | 635.0 (68.9) | −.4 | Ns |
| Whole Brain Grey (cc)—POST | 612.8 (79.9) | 627.5 (66.1) | −.6 | Ns |
Figures in parentheses in body of table are standard deviations. Abbreviations are cm, centimeter; kg, kilogram; BMI, BMI; BP, BP; cc, cubic centimeter. T values compare hypertensive and normotensive groups; chi square is used to compare gender composition of the groups. Pre-Post changes in whole brain grey are not significant overall or within each group. Note that due to sample size differences and possible method variance, the standard error the mean was larger in the ADNI control sample (SE=17) than in the hypertensive sample (SE=12).