Table 3.
Cognitive characteristics at baseline
| MCI (n=239) |
MBI (n=119) |
Comparison | |
|---|---|---|---|
| Cognitive symptoms n, (%) | 239 (100) | 59 (49.6) | χ2(1) = 141.878 p < 0.001 (**) |
| Mini Mental State Exam score, mean (SD) | 27.4 (1.8) | 26.1 (2.1) | t = 4.420 p < 0.001 (***) |
| Signoret Memory Test | |||
| Paragraph recall, median | 5 | 7 | z = -7.064 p < 0.001 (*) |
| Paragraph delay recall, median | 4 | 5 | z = -3.781 p < 0.001 (*) |
| List of words, median | 7 | 8 | z = -5.099 p < 0.001 (*) |
| Retention, median | 4 | 6 | z = -5.305 p < 0.001 (*) |
| Recall with clues, median | 7 | 8 | z = -1.607 p = 0.108 (*) |
| Recognition, median | 11 | 10 | z = 2.790 p = 0.005 (*) |
| Boston Naming Test, mean (SD) | 49.6 (0.43) | 47.9 (0.64) | t = 2.2663 p = 0.024 (***) |
| Semantic fluency, median | 15 | 14 | z = 2.169 p = 0.030 (*) |
| Fonologic fluency, median | 12 | 11 | z = 0.433 p = 0.665 (*) |
| Digit Span, median | 8 | 6 | z = 6.760 p < 0.001 (*) |
| Trail making B, mean (SD) | 125.7 (8.37) | 158.9 (8.50) | t = -2.616 P = 0.009 (***) |
| Wechsler Abbreviated Scale of Intelligence | |||
| Vocabulary, median | 55 | 50 | z = -0.359 p = 0.719 (*) |
| Similarities, median | 48 | 37 | z = -0.359 p = 0.719 (*) |
| Block Design, median | 42 | 32 | z = -4.707 p < 0.001 (*) |
| Matrix Reasoning, median | 40 | 36.5 | z = -3.856 p < 0.001 (*) |
| Verbal IQ, mean (SD) | 107.8 (1.88) | 96.7 (1.03) | t = 4.3335 p < 0.001 (***) |
| Performance Scale IQ, mean (SD) | 95.5 (1.04) | 88.9 (0.91) | t = 4.3467 p < 0.001 (***) |
| Global IQ, mean (SD) | 101.1 (0.96) | 92.3 (0.85) | t = 6.2819 p < 0.001 (***) |
(*)
Wilcoxon ranksum test
(**)
Pearson χ2
(***)
t test