TABLE 1.
Co‐occurrence matrix for Neuropsychiatric Inventory (NPI)‐10
| NPI items | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1. Delusions | – | 8 (89) | 2 (22) | 0 | 1 (11) | 0 | 0 | 1 (11) | 2 (22) | 3 (33) |
| 2. Hallucinations | – | 2 (22) | 0 | 1 (11) | 0 | 0 | 1 (11) | 2 (22) | 3 (33) | |
| 3. Agitation | – | 3 (33) | 4 (44) | 0 | 2 | 3 (33) | 8 (89) | 4 (44) | ||
| 4. Depression | – | 7 (78) | 1 (11) | 3 (33) | 0 | 3 (33) | 0 | |||
| 5. Anxiety | – | 1 (11) | 2 (22) | 0 | 3 (33) | 0 | ||||
| 6. Euphoria | 1 (11) | 1 (11) | 5 (56) | 1 (11) | 3 (33) | |||||
| 7. Apathy | 1 (11) | 4 (44) | 2 (22) | 4 (44) | ||||||
| 8. Disinhibition | – | 3 (33) | 6 (67) | |||||||
| 9. Irritability | – | 4 (44) | ||||||||
| 10. Aberrant motor behavior | – |
Note: Numbers on diagonal indicate that the number of studies where the NPI item was the only item on a factor. Numbers in parentheses are the item pairings as a percentage (%) of included NPI‐10 studies. If no loading matrix was available, in‐text information was used. If an NPS loaded onto multiple factors, we included the pairings for all scenarios. Studies with no information regarding which NPI items loaded onto which factor were not included in tabulation.