Table 2.
Baseline neuropsychological performance of MCI and control participants
| Domains | MCI n = 139, mean score (SD) | Controls n = 98, mean score (SD) | t(df) P | Cohen's d |
|---|---|---|---|---|
| Immediate and delayed memory | ||||
| NYU immediate paragraph recall (words recalled) | 3.6 (2.2) | 5.6 (2.3) | −6.7 (236); <.01 | 0.89 |
| NYU delayed paragraph recall (words recalled) | 3.8 (3.1) | 7.0 (2.8) | −8.2 (236); <.01 | 1.00 |
| PAL stage reached | 6.0 (1.5) | 6.7 (0.9) | −3.0 (236); <.01 | 0.56 |
| Executive function and attention | ||||
| CLOX1 | 11.0 (2.7) | 12.0 (2.1) | −3.1 (236); <.01 | 0.41 |
| Color trails 1 (s) | 83.9 (39.7) | 64.6 (22.8) | 4.7 (236); <.01 | 0.59 |
| Color trails 2 (s) | 165.3 (65.2) | 133.2 (46.5) | 4.4 (236); <.01 | 0.57 |
| Stroop color word (number in 45 s) | 24.5 (10.7) | 29.8 (9.5) | −3.9 (236); <.01 | 0.52 |
| Hayling sentence completion (total performance) | 13.4 (3.4) | 15.5 (3.4) | −4.4 (236); <.01 | 0.62 |
| Language | ||||
| COWAT letter fluency | 10.8 (4.3) | 12.3 (4.2) | −2.6 (236); .01 | 0.35 |
| COWAT category fluency | 13.6 (4.5) | 16.8 (3.7) | −5.8 (236); <.01 | 0.78 |
| Visuospatial function | ||||
| CLOX 2 | 13.1 (1.5) | 13.8 (1.3) | −3.8 (236); <.01 | 0.50 |
| Brixton spatial anticipation test (numberof errors) | 18.3 (8.0) | 15.4 (6.2) | 2.8 (236); <.01 | 0.40 |
Abbreviations: MCI, mild cognitive impairment; SD, standard deviation; NYU, New York University; PAL, paired associate learning; COWAT, controlled oral word association test.