Table 2.
Demographic characteristics and cognitive and behavioral features of non-mild behavioral impairment and mild behavioral impairment groups in mild cognitive impairment, mean ± SD/n (%)
| Characteristic |
MCI (n = 105)
|
t/χ2/K-W
|
P value
|
|
|
MBI- (n = 89)
|
MBI+ (n = 16)
|
|||
| Age (years) | 77.5 ± 8.1 | 75.3 ± 6.1 | 0.997 | 0.321 |
| Male | 31 (34.8) | 7 (43.8) | 0.467 | 0.494 |
| Education years median (P25, P75) | 10 (6, 14) | 12 (9.5, 12) | 0.901 | 0.367 |
| Bereavement | 22 (24.7) | 3 (13.8) | 0.266 | 0.606 |
| Current smoking | 4 (4.5) | 3 (18.8) | 5.328 | 0.058 |
| Current drinking | 11 (12.4) | 4 (25.0) | 3.413 | 0.171 |
| Hypertension | 30 (33.7) | 11 (68.8) | 6.997 | 0.008 |
| Coronary heart disease | 24 (27.0) | 7 (43.8) | 1.836 | 0.175 |
| Diabetes | 20 (22.5) | 6 (37.5) | 1.644 | 0.200 |
| Hyperlipidemia | 23 (25.8) | 6 (37.5) | 0.922 | 0.337 |
| SCD | 73 (82.0) | 16 (100) | 3.394 | 0.065 |
| MMSE median (P25, P75) | 25 (24, 27) | 25 (23.3, 27) | 0.250 | 0.803 |
| MoCA median (P25, P75) | 22 (19, 24) | 23 (19.5, 24) | 0.405 | 0.686 |
| CDT median (P25, P75) | 3 (2, 4) | 3.5 (2, 4) | 0.195 | 0.845 |
| BNT (points) | 22.8 ± 4.5 | 23.8 ± 3.2 | 0.839 | 0.403 |
| DST (points) | 8.5 ± 2.7 | 8.3 ± 2.0 | 0.227 | 0.821 |
| MBI total score median (P25, P75) | 0 (0, 2) | 9.5 (7.5, 12.8) | 6.322 | < 0.001 |
| FAQ median (P25, P75) | 0 (0, 2) | 1 (0, 4.8) | 2.042 | 0.041 |
Independent sample t-test for variable of normal distribution, Mann-Whitney U for variable of non-normal distribution, χ2 test for categorical variables. MBI: Mild behavioral impairment; MCI: Mild cognitive impairment; SCD: Subjective cognitive impairment; MMSE: Mini-mental state examination; MoCA: Montreal cognitive assessment; CDT: Clock drawing test; BNT: Boston naming test; DST: Digit span test; P25: Lower quartile; P75: Upper quartile; FAQ: Functional activities questionnaire.