Table 2 Estimated relative risk (RR) for the risk of dropout

Partner type^a

0.027

0.928

 Spouse

1721

597

28

1

–

1

–

 Adult child

658

251

16

1.23 (1.06, 1.42)

0.007

1.06 (0.79, 1.43)

0.698

 Other

224

80

1

1.08 (0.86, 1.36)

0.524

1.03 (0.75, 1.40)

0.863

Participant age (per 10 years)

2603

928

45

1.41 (1.29, 1.53)

< .001

1.41 (1.26, 1.58)

< .001

Education (years)

2603

928

45

0.98 (0.96, 1.00)

0.011

0.99 (0.97, 1.01)

0.165

Partner age (per 10 years)

2603

928

45

1.04 (0.99, 1.09)

0.15

1.02 (0.93, 1.13)

0.645

 Mini-Mental State Exam

2603

928

45

0.94 (0.92, 0.96)

< .001

0.95 (0.92, 0.97)

< .001

 Hachinski Score

2603

928

45

1.14 (1.06, 1.22)

< .001

1.04 (0.96, 1.12)

0.336

 Geriatric Depression Scale

2603

928

45

1.09 (1.05, 1.13)

< .001

1.09 (1.05, 1.14)

< .001

 Female

1437

493

19

1

–

1

–

 Male

1166

435

26

1.07 (0.94, 1.22)

0.281

1.26 (1.05, 1.51)

0.013

 Female

1602

588

26

1

–

1

–

 Male

1001

340

19

0.91 (0.80, 1.04)

0.172

1.10 (0.92, 1.32)

0.293

 No

1652

615

27

1

–

1

–

 Yes

951

313

18

0.88 (0.77, 1.01)

0.06

0.93 (0.79, 1.09)

0.373

 No

903

333

20

1

–

1

–

 Yes

1700

595

25

0.94 (0.82, 1.08)

0.396

1.00 (0.87, 1.15)

0.993

 North America

971

369

19

1

–

1

–

 South America/Mexico

201

81

6

1.24 (0.98, 1.57)

0.08

1.03 (0.79, 1.34)

0.828

 Eastern Europe/Russia

286

133

2

1.50 (1.24, 1.83)

< .001

1.44 (1.16, 1.80)

0.001

 Western Europe/Israel

543

167

7

0.78 (0.65, 0.94)

0.007

0.82 (0.67, 0.99)

0.044

 Australia/South Africa

151

57

6

0.96 (0.73, 1.28)

0.803

0.97 (0.73, 1.29)

0.823

 Asia

200

62

2

1.07 (0.82, 1.40)

0.608

1.02 (0.77, 1.35)

0.899

 Japan

251

59

3

0.60 (0.45, 0.79)

< .001

0.58 (0.44, 0.78)

< .001