Table 2.
Results of g-SI and Global Volumes Analyses
| NSS | ns-NSS | NSS Versus ns-NSS | |||
| Mean (SD) | Difference, % | F | P value | ||
| Left Hemisphere | |||||
| Global sulcal index (g-SI) | 1.41 (0.12) | 1.49 (0.15) | −5.8 | 7.67 | .009 |
| Hemispheric volume, cm3 | 526.8 (82.0) | 561.27 (68.8) | −6.5 | 3.74 | .06 |
| Normalized GM volume, % | 46.8 (4.6) | 48.2 (3.9) | −3.0 | 1.98 | .17 |
| Normalized WM volume, % | 37.9 (4.3) | 38.2 (3.6) | −0.8 | 0.10 | .75 |
| Normalized CSF volume, % | 15.3 (3.9) | 13.6 (3.3) | +11.2 | 4.03 | .05 |
| Right Hemisphere | |||||
| Global sulcal index (g-SI) | 1.42 (0.17) | 1.51 (0.14) | −5.7 | 5.78 | .02 |
| Hemispheric volume, cm3 | 528.6 (81.8) | 561.8 (68.6) | −6.3 | 3.50 | .07 |
| Normalized GM volume, % | 46.8 (4.6) | 48.1 (3.8) | −2.7 | 1.65 | .21 |
| Normalized WM volume, % | 38.1 (4.2) | 38.1 (3.6) | +0.2 | 0.005 | .94 |
| Normalized CSF volume, % | 15.1 (3.8) | 13.9 (3.2) | +8.1 | 2.17 | .15 |
Notes: Data are presented as means (SD). Variables significantly different between patients with Neurological Soft Signs (NSS) and patients with nonsignificant NSS (ns-NSS) are indicated by boldface (patients with NSS as reference). All results were linearly adjusted for age, gender, and years of education.
Abbreviations: GM, Gray Matter; WM, White Matter; CSF, Cerebrospinal Fluid.