Table 1 Demographics of the study population in total and by cohort

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