Table 2.
Association between agitation symptoms and per capita annual cost*: unadjusted and adjusted analyses (N=695)
| NPI agitation score | Number (%) | Mean (SD) | Median (IQR) | Adjusted mean (95% CI)† |
|---|---|---|---|---|
| 0 | 314 (45.2) | 28 218 (43 332) | 13 962 (3048–36 444) | 28 983 (24 364 to 33 603) |
| 1 | 68 (9.8) | 22 596 (24 266) | 22 352 (2666–32 149) | 43 910 (30 618 to 57 203) |
| 2 | 60 (8.6) | 29 544 (34 427) | 27 328 (8546–39 088) | 31 196 (22 903 to 39 490) |
| 3 | 51 (7.1) | 29 653 (23 081) | 28 216 (9089–39 076) | 35 120 (25 592 to 44 648) |
| 4 | 60 (8.6) | 27 909 (23 353) | 27 566 (6796–38 728) | 35 458 (26 843 to 44 074) |
| 6 | 57 (8.2) | 35 324 (40 889) | 27 648 (9720–39 028) | 25 138 (17 918 to 32 358) |
| 8 | 45 (6.5) | 42 289 (48 695) | 31 076 (23 616–42 532) | 36 568 (25 590 to 47 545) |
| 9 | 12 (1.7) | 46 589 (41 302) | 39 388 (18 017–64 726) | 38 568 (11 867 to 65 269) |
| 12 | 28 (4.0) | 61 064 (76 070) | 36 794 (27 126–44 468) | 57 023 (31 861 to 82 186) |
| p Value | 0.001 | <0.001 | 0.01 |
*2011 UK£.
†Controls are included for age, gender, marital status, ethnic group, highest level of education, previous employment, rurality, coexisting conditions (diabetes, stroke, hypertension, heart disease), total NPI score, cognitive impairment (MMSE) and follow-up.
MMSE, Mini-Mental State Examination; NPI, Neuropsychiatric Inventory.