Table 2.
Descriptive statistics for the 69 patients.
| Age (mean, SD) | 83.5 (7.1) |
| Female (%) | 68.0% |
| Mini mental state examination sum score, mean (SD) (n = 56) |
6.4 (6.7), median 4.0 |
| Dementia diagnoses, n (%) | |
| Alzheimer's disease (AD) | 38 (55.1) |
| Mixed AD and vascular dementia | 0 |
| Lewy body dementia | 1 (1.4) |
| Other dementia | 2 (2.9) |
| Vascular dementia | 4 (5.8) |
| Frontotemporal dementia | 0 |
| Parkinson's dementia | 0 |
| Unknown dementia | 21 (30.4) |
| No diagnosis¤ | 3 (4.4) |
| Neuropsychiatric inventory (NPI) (n = 69) | |
| NPI total score, median (25th−75th percentile) | 21.0 (6.0–42.0) |
| Sleep item score, median (25th−75th percentile) | 0.0 (0.0–4.0) |
| Sleep item score ≥ 4, n (%) | 18 (26.1) |
| Sleep item score 0, n (%) | 38 (55.1) |
| Total number of medications (mean, SD) | 6.7 (2.8) |
| Number of psychotropic medications* (mean, SD) | 2.9 (1.3) |
| Number of sedatives and hypnotics§, n (%) | |
| 0 | 60 (87.0) |
| 1 | 8 (11.6) |
| 2 | 1 (1.4) |
*
All medications with an ATC code starting with N.
§
All medications with an ATC code starting with N05C.
¤
These patients were still included as their scores on the Mini Mental State Examination and the Functional Assessment Staging suggest moderate and severe dementia. In addition, clinically trained researchers concluded that they with high probability suffered from dementia according to the DSM-5 criteria.