Table 1.
Demographic variables and neuropsychological scores
| Non-cognitively impaired (mean ± SD) | MCI (mean ± SD) | T- or χ2-statistic (d.o.f: degree)T- or χ2-statistic (d.o.f) | P value | |
|---|---|---|---|---|
| Demographic variables | ||||
| n | 68 | 29 | ||
| CDR | 0 | 0.5 | ||
| MMSE | 29.1 ± 1 | 27.7 ± 1 | 5.4 (95) | 0 |
| Age | 66 ± 6 | 68 ± 8 | −1.6 (95) | .1 |
| Gender (Female/Male) | 0.7 | 0.7 | 0.01 (95) | .9 |
| Education level | 2 | 2 | 0.4 (2) | .8 |
| Personality: domain scores (NEO PI-R) | ||||
| Neuroticism | 77.6 ± 23 | 88.8 ± 27 | −2 (95) | .04 |
| Extraversion | 105.7 ± 18 | 94.72 ± 17 | 2.7 (95) | .007 |
| Openness | 109.9 ± 19 | 98.9 ± 16 | 2.6 (95) | .01 |
| Agreeableness | 135.2 ± 17 | 123.2 ± 17 | 3 (95) | .003 |
| Conscientiousness | 134.5 ± 19 | 111.5 ± 22 | 5 (95) | 0 |
| Other neuropsychological scores | ||||
| Cued recall (RL-RI-48) | 29.2 ± 4 | 27.27 | −40.83 | 0 |
| Depression score (HADS-D) | 2.1 ± 2 | 3.3 ± 3 | −1.8 (95) | .07 |
| Anxiety score (HADS-A) | 4.7 ± 3 | 5 ± 3 | −0.3 (95) | .7 |
Abbreviations: CDR, Clinical Dementia Rating; HADS, Hospital Anxiety and Depression Scale; MCI, mild cognitive impairment; MMSE, Mini–Mental State Examination; NEO PI-R, NEO Personality Inventory Revised.