Table 3 Comparison of demography and morbidity between those taking and not taking antipsychotic drugs.
| Taking antipsychotics | Not taking antipsychotics | Statistics | 95% CI/IQR | |
|---|---|---|---|---|
| Age, mean (SD) | 80.4 (7.3) | 80.8 (7.5) | t = 0.3 | 95% CI −2.6 to 3.4 |
| Sex, n (%) female | 22 (73.3) | 96 (72.7) | χ2 = 0.005 | 95% CI 0.4 to 2.5 |
| SIB score at baseline, median (range) | 91 (21–99) | 94 (11–99)* | U = 1405.5 | IQR 87–97 |
| MMSE score, median (range) | 15 (3–25) | 19 (4–29)** | U = 1154.5 | IQR 13–22 |
| ADAS‐cog score, median (range) | 34.5 (13–67) | 27.5 (8–65)* | U = 1160.5 | IQR 20.25–40.75 |
| Years of education, mean (SD) | 9.2 (2.2) | 9.5 (1.5) | t = 0.7 | 95% CI −0.7 to 1.4 |
| Total NPI score, median (range) | 11 (0–79) | 14 (0–69) | U = 1964.5 | IQR 7–23 |
| NPI delusions score, median (range) | 0 (0–12) | 0 (0–12) | U = 1930.5 | IQR 0 to 1.3 |
| NPI hallucinations score, median (range) | 0 (0–4) | 0 (0–12) | U = 1954.0 | IQR 0–0 |
| NPI agitation score, median (range) | 1 (0–12) | 0 (0–12) | U = 1709.0 | IQR 0–2 |
| NPI sleep disturbance score, median (range) | 0 (0–12) | 0 (0–12) | U = 1899.5 | IQR 0–2 |
| Cholinesterase inhibitors prescribed, n (%) | 12 (40) | 92 (69.7)*** | χ2 = 9.4 | 95% CI 0.1 to 0.7 |
ADAS‐cog, Alzheimer's Disease Assessment Scale—Cognitive Subscale; IQR, interquartile range; MMSE, Mini‐Mental State Examination; NPI, Neuropsychiatric Inventory; SIB, severe impairment battery; t, T test; U, Mann–Whitney U test.
*p<0.05.
**p⩽0.005.
***p = 0.001.