Table 1 Baseline characteristics of 2006 study sample

Number: N

37,753

9,139

28,614

Age: mean (SD)

80.1 (6.8)

81.6 (7.4)

79.6 (6.4)

<0.0001

Gender: females (%)

27,012 (71.6)

6,814 (74.6)

20,198 (70.6)

Environment: n (%)

<0.0001

Living in community setting

33,119 (87.7)

5,524 (60.4)

27,595 (96.4)

<0.0001

Living in nursing home

3,646 (9.7)

2,934 (32.1)

712 (2.5)

Change in environment

988 (2.6)

681 (10.3)

307 (1.1)

Care level*: n (%)

<0.0001

None

28,746 (76.1)

3,466 (37.9)

25,280 (88.3)

1

42,066 (11.1)

2,066 (22.6)

2,140 (7.5)

2

3,131 (8.3)

2,164 (23.7)

967 (3.4)

3

1,670 (4.4)

1,443 (15.8)

227 (0.8)

Modified Charlson Index**: mean (SD)

3.2 (2.7)

3.6 (2.7)

3.0 (2.7)

<0.0001