Table 1.
Demographics of the study population in total and by cohort
| Total | 2004 | 2007 | 2011 | P-value | |
|---|---|---|---|---|---|
| N = 4739 | N = 1137 | N = 1879 | N = 1723 | ||
| Age, mean (SD) a,b | 85.7 (7.0) | 85.0 (6.5) | 85.9 (7.1) | 85.9 (7.1) | 0.03 |
| Women, N (%) | 3383 (71) | 836 (74) | 1321 (70) | 1226 (71) | NS |
| Regular drugs without psychotropics, mean (SD)a, b,c | 5.2 (2.9) | 4.7 (2.8) | 5.1 (2.9) | 5.7 (3.0) | <0.001 |
| Dementia (CDR), N (%) | <0.001 | ||||
| No | 497 (11) | 37 (3) | 406 (22) | 54 (3) | |
| Questionable | 388 (8) | 183 (16) | 0 (0) | 205 (12) | |
| Mild | 686 (15) | 225 (20) | 163 (9) | 298 (18) | |
| Moderate | 1336 (28) | 306 (27) | 529 (28) | 501 (30) | |
| Severe | 1786 (38) | 382 (34) | 768 (41) | 636 (38) | |
| Dependency, mean (SD)b,d | 18.1 (5.4) | 18.0 (5.3) | 18.5 (5.5) | 17.7 (5.3) | <0.001 |
| NPI-NH total score, mean (SD) | 17.5 (18.7) | 18.5 (19.2) | 16.1 (17.6) | 18.5 (17.6) | 0.03 |
ANOVA for continuous and X 2 for categorical data
NPI-NH neuropsychiatric inventory – nursing home version, SD standard deviation, NS not significant
CDR Clinical Dementia Rating scale 1 to 3, asignificant between 2004 and 2007, bsignificant between 2004 and 2011, csignificant between 2007 and 2011, dhigher scores indicates more dependency in daily living