Table 1.
Demographic information and neuropsychological test scores
| Group | Controls |
Mild cognitive impairment |
P value | ||
|---|---|---|---|---|---|
| Mean | SD | Mean | SD | ||
| Number of participants | 20 | 10 | |||
| Number of men/women | 10/10 | 5/5 | |||
| Age (years) | 75.3 | 4.8 | 72.7 | 5.3 | NS |
| Mini Mental State Examination | 28.9 | 1.2 | 26.3 | 2.9 | 0.003a |
| Verbal fluency | |||||
| Phonemic category | 30.0 | 7.7 | 27.0 | 8.8 | NS |
| Semantic category | 47.4 | 10.6 | 35.8 | 7.8 | 0.007a |
| Hopkins Verbal Learning | |||||
| Test-Revised | |||||
| Total Recall | 25.4 | 5.1 | 16.9 | 6.2 | 0.001a |
| Delayed Recall | 9.1 | 1.8 | 3.3 | 3.8 | 0.002b |
| Recognition Discrimination Index | 10.8 | 1.6 | 7.1 | 2.5 | 0.002b |
| Hopkins Board | |||||
| Trials to Learning Criterion | 4.4 | 2.6 | 8.8 | 1.7 | < 0.001a |
| Delayed Recall of Items | 8.4 | 0.9 | 5.8 | 2.7 | 0.001b |
| Delayed Recall of Locations | 8.6 | 0.9 | 5.4 | 3.4 | 0.017b |
| Trail Making Test | |||||
| Part A | 47.9 | 13.2 | 39.1 | 14.1 | NS |
| Part B | 90.0 | 30.6 | 143.1 | 102.7 | NS |
| Visual Motor Integration | 20.1 | 3.4 | 16.7 | 3.8 | 0.024a |
| Brief Test of Attention | 6.8 | 2.6 | 5.8 | 2.9 | NS |
Data are presented as means and standard deviations (SD).
Age, phonemic and semantic categorical Verbal Fluency Test scores, and Hopkins Verbal Learning Test-Revised Total Recall raw scores were all normally distributed variables based on the Kolmogorov–Smirnov test and the Shapiro-Wilk tests. The Trail Making Test (part A) and Brief Test of Attention scores were found normally distributed only by the Shapiro–Wilk test and Visual Motor Integration scores were normally distributed only by the Kolmogorov–Smirnov test.
NS, not significant.
a
Statistically significant values, two-tailed Student’s t-test.
b
Statistically significant values, Mann–Whitney U test.