Variable

2013

2015

Total

Count

Mean

Variance

Count

Mean

Variance

Count

Mean

Variance

Co-residence

2682

0.450

0.498

3123

0.451

0.498

5805

0.451

0.498

Retirement

2642

0.435

0.496

2927

0.398

0.490

5569

0.416

0.493

Age

2682

65.578

4.238

3123

65.720

4.154

5805

65.654

4.193

Gender

2681

0.490

0.500

3123

0.481

0.500

5804

0.485

0.500

Education

2680

3.688

2.071

2977

3.697

2.062

5657

3.693

2.066

Marriage

2680

0.859

0.348

3065

0.866

0.340

5745

0.863

0.344

Assets

2328

6.971

3.113

2815

7.276

3.133

5143

7.138

3.127

Health condition

2661

1.987

0.694

2910

1.980

0.666

5571

1.983

0.680

Number of children alive

2682

2.792

1.309

3123

2.636

1.289

5805

2.708

1.301

Number of deceased children

2682

0.085

0.313

3123

0.133

0.458

5805

0.111

0.398

Self-care ability

2652

6.564

1.867

3032

6.568

1.714

5684

6.566

1.787

House ownership

2567

0.880

0.325

2955

0.855

0.352

5522

0.866

0.340