Table 1.
Subject demographics, cognitive measures, and ROI volumes
| SPD mean (S.D.) |
Comparison mean (S.D.) |
F, p or Mann– Whitney U ◊ |
||||
|---|---|---|---|---|---|---|
| Age | 28.8 | (8.1) | 30.8 | (10.1) | .566 | 0.45 |
| PSES | 4.2 | (.9) | 4.4 | (.7) | .789 | 0.38 |
| SES | 3.0 | (1.0) | 4.0 | (1.0) | 12.258 | 0.001 |
| Years of education | 15.0 | (1.9) | 16.4 | (1.5) | 6.618 | 0.005 |
| WAIS-R vocabulary |
13.1 | (1.7) | 13.9 | (1.8) | 2.142 | 0.15 |
| WAIS-R block design |
12.5 | (2.7) | 12.1 | (2.1) | .272 | 0.6 |
| DA total errors | 12.8 | (15.0) | 5.6 | (7.5) | 4.313 | 0.04 |
| DA perseverations | 2.7 | (3.9) | .56 | (1.0) | 7.142 | 0.01 |
| DA failure to maintain set |
.85 | (1.3) | .28 | (.6) | 3.561 | <0.07 |
| WMS-R Logical Memory 1 (%) |
32.2 | (5.6) | 34.2 | (4.9) | 1.364 | <0.3 |
| CVLT total words | 60.5 | (4.6) | 63.3 | (6.5) | 2.608 | 0.113 |
| CVLT Semantic Clustering |
2.6 | (.8) | 2.7 | (.7) | .296 | <0.6 |
| Left hippocampus ◊ |
2.75 | (.2) | 3.20 | (.2) | 54.0 | <0.0005 |
| Right hippocampus ◊ |
2.88 | (.3) | 3.37 | (.3) | 54.0 | <0.0005 |
| CSP (# slices) ◊ | 2.8 | (1.7) | 1.69 | (1.2) | 177.0 | <0.02 |
Subject demographics, cognitive measures, and hippocampal volumes. Hippocampus given as absolute volumes, statistics performed on ICC corrected volumes. Hippocampus volume measures were not normally distributed on the left for SPD subjects (Shapiro–Wilk=0.870, p=0.012), nor for the number of slices containing a CSP for both SPD and comparison subjects (SPD: Shapiro–Wilk=0.861, p=0.008; comparison subjects Shapiro–Wilk=0.894, p=0.007).