TABLE 2.
Co‐occurrence matrix for NPI‐12
| NPI items | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. Delusions | – | 13 (81) | 5 (31) | 2 (13) | 4 (25) | 1 (6) | 0 | 2 (13) | 4 (25) | 2 (13) | 4 (25) | 0 |
| 2. Hallucinations | – | 2 (13) | 1 (6) | 1 (6) | 2 (13) | 1 (6) | 2 (13) | 1 (6) | 3 (19) | 7(44) | 2 (13) | |
| 3. Agitation | – | 4 (25) | 7 (44) | 1 (6) | 3 (19) | 7(44) | 15 (94) | 4 (25) | 1 (6) | 2 (13) | ||
| 4. Depression | – | 12 (75) | 2 (13) | 8 (50) | 4 (25) | 4 (25) | 1 (6) | 2 (13) | 2 (13) | |||
| 5. Anxiety | – | 1 (6) | 5 (31) | 1 (6) | 6 (38) | 0 | 0 | 2 (13) | ||||
| 6. Euphoria | 1 (6) | 1 (6) | 10 (63) | 2 (13) | 4 (25) | 2 (13) | 1 (6) | |||||
| 7. Apathy | – | 3 (19) | 2 (13) | 5 (31) | 6 (38) | 9 (56) | ||||||
| 8. Disinhibition | – | 8 (50) | 5 (31) | 2 (13) | 1 (6) | |||||||
| 9. Irritability | – | 3 (19) | 1 (6) | 2 (13) | ||||||||
| 10. Aberrant motor behavior | – | 7(44) | 5 (31) | |||||||||
| 11. Night‐time behavioral disturbances | – | 7(44) | ||||||||||
| 12. Appetite and eating abnormalities | 3 (19) |
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‐12 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.