Table 3.
Correlation between cognitive and neuropsychiatric decline and hypothesized related factors in Alzheimer's disease (AD) and probable dementia with Lewy bodies (DLB).
AD | DLB | |||||||
---|---|---|---|---|---|---|---|---|
MMSE worse | NPI worse | MMSE worse | NPI worse | |||||
r | P | r | P | r | P | r | P | |
Age (baseline) | −0.030 | 0.760 | 0.077 | 0.434 | 0.147 | 0.514 | 0.141 | 0.531 |
Gender | 0.001 | 0.992 | 0.061 | 0.535 | −0.101 | 0.654 | 0.044 | 0.846 |
Disease duration (baseline) | −0.09 | 0.924 | −0.043 | 0.664 | −0.383 | 0.079 | −0.149 | 0.507 |
Marital status (baseline) | 0.170 | 0.083 | 0.034 | 0.729 | −0.232 | 0.299 | −0.251 | 0.260 |
Education level | 0.053 | 0.592 | −0.134 | 0.172 | 0.205 | −0.359 | 0.350 | 0.110 |
Physical activity (change) | 0.274 | 0.005** | 0.040 | 0.685 | −0.142 | 0.527 | 0.299 | 0.177 |
Social contact (change) | 0.069 | 0.485 | 0.273 | 0.005** | 0.136 | 0.547 | 0.496 | 0.029* |
Sleep disturbance (baseline) | 0.208 | 0.033* | 0.279 | 0.004** | 0.210 | 0.349 | 0.001 | 1.000 |
MMSE (baseline) | 0.002 | 0.987 | −0.274 | 0.005** | 0.382 | 0.080 | 0.182 | 0.417 |
NPI (baseline) | 0.137 | 0.163 | −0.090 | 0.359 | −0.120 | 0.594 | −0.333 | 0.131 |
HAMD (baseline) | 0.125 | 0.203 | 0.175 | 0.075 | −0.032 | 0.889 | −0.341 | 0.121 |
ESS (baseline) | 0.124 | 0.209 | 0.298 | 0.002** | −0.014 | 0.953 | 0.058 | 0.804 |
*P < 0.05, **P < 0.01; MMSE, mini-mental status exam; NPI neuropsychiatric inventory; HAMD, Hamilton depression scale; ESS, Epworth sleepiness scale.