Table 3. Mean values and standard deviation of burden and depression for each neuropsychiatric symptom of the Neuropsychiatric Inventory.
| Burden (ZBI) | Depression (BDI) | ||||||
|---|---|---|---|---|---|---|---|
| Mean | SD | p-value | Mean | SD | p-value | ||
| Delusions | No | 29.14 | 10.12 | 0.001 | 4.77 | 4.73 | 0.001 |
| Yes | 34.78 | 9.9 | 8.4 | 6.91 | |||
| Hallucinations | No | 29.63 | 9.91 | <0.001 | 5.32 | 5.36 | 0.004 |
| Yes | 36.24 | 10.16 | 8.73 | 6.84 | |||
| Agitation/aggression | No | 29.04 | 9.27 | <0.001 | 5.33 | 5.5 | 0.003 |
| Yes | 37.13 | 10.73 | 8.45 | 6.53 | |||
| Dysphoria/depression | No | 28.74 | 9.36 | <0.001 | 4.96 | 5.05 | 0.004 |
| Yes | 35.12 | 10.62 | 8.02 | 6.69 | |||
| Anxiety | No | 30.74 | 9.42 | 0.558 | 6.12 | 6.26 | 0.496 |
| Yes | 32.22 | 11.32 | 6.42 | 5.71 | |||
| Euphoria/elation | No | 30.93 | 10.04 | 0.003 | 5.99 | 5.76 | 0.016 |
| Yes | 48.5 | 5.97 | 15 | 7.07 | |||
| Apathy | No | 28.89 | 10.66 | 0.004 | 4.98 | 5.88 | 0.004 |
| Yes | 33.73 | 9.62 | 7.39 | 5.88 | |||
| Disinhibition | No | 30.06 | 9.97 | 0.043 | 6.07 | 5.93 | 0.422 |
| Yes | 34.97 | 10.67 | 6.74 | 6.16 | |||
| Irritability/lability | No | 28.81 | 9.02 | <0.001 | 5.74 | 5.76 | 0.174 |
| Yes | 36.04 | 11.04 | 7.16 | 6.3 | |||
| Aberrant motor behavior | No | 30.12 | 10.65 | 0.041 | 5.41 | 5.4 | 0.031 |
| Yes | 33.63 | 9.62 | 7.65 | 6.64 | |||
| Nighttime behavior disturbances | No | 29.4 | 9.79 | 0.003 | 5.48 | 5.84 | 0.01 |
| Yes | 35.02 | 10.48 | 7.61 | 6.02 | |||
| Appetite and eating change | No | 30.68 | 9.49 | 0.203 | 6.05 | 6.02 | 0.434 |
| Yes | 33.33 | 12.19 | 6.77 | 5.91 | |||
p-value for the Mann-Whitney test to compare values between the two groups (those who presented and did not present each NPS). ZBI: Zarit Burden Interview; BDI: Beck Depression Inventory; SD: standard deviation; NPS: neuropsychiatric symptom.