Table 3.
Summary statistics volume and cognitive performance
| Full sample | Left hemisphere | Right hemisphere | ||||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | |
| Volume | 52.488 | 47.838 | 49.118 | 42.669 | 57.978** | 54.88 |
| STM | 5.24 | 1.17 | 5.324** | 1.268 | 5.077 | 0.933 |
| WM | 3.918 | 1.165 | 3.739 | 1.193 | 4.271*** | 1.021 |
| Fluency | 29.37 | 14.322 | 30.087** | 15.112 | 25.975 | 9.072 |
| TMT-A | 41.568 | 27.923 | 44.969* | 30.906 | 39.618 | 25.93 |
| TMT-B | 119.311 | 71.704 | 133.423** | 73.801 | 111.349 | 69.405 |
| TMT-B-A | 79.218 | 56.952 | 91.131** | 59.561 | 72.55 | 54.447 |
| Test for left hemisphere | Test for right hemisphere | |||||
|---|---|---|---|---|---|---|
| mean | SD | mean | SD | |||
| Comprehension | 32.335 | 5.719 | Construct | 13.014 | 2.098 | |
| Naming | 27.063 | 5.382 | Clock | 8.944 | 2.129 | |
| Cancel | 52.331 | 3.77 | ||||
Volume is measured in mm3. STM, short term memory; WM, working memory; TMT, trail making test; Comprehension, verbal comprehension; Construct, constructional apraxia; Naming, noun naming; Cancel, cancellation test. Stars after the mean in the left or right hemisphere column indicate a larger value for the corresponding hemisphere, with statistical significance measured by a t-test, whose P-values are reported by the asterisks: ***P < 0.01, **P < 0.05, *P < 0.1.