Sample size |
1593 |
1825 |
1568 |
1850 |
Demographics |
Gender (male = 1, female = 0) |
46.3% |
48.7% |
43.8% |
50.8% |
Mean age (range: 50–100) |
68.5 |
69.3 |
69.5 |
68.5 |
Residence (urban = 1, rural = 0) |
85.2% |
89.2% |
85.4% |
88.9% |
Medical factors |
Hypertension (yes = 1, no = 0) |
47.0% |
49.0% |
50.5% |
46.0% |
Cardiovascular diseases (yes = 1, no = 0) |
24.0% |
23.2% |
27.9% |
19.9% |
Stroke (yes = 1, no = 0) |
5.2% |
6.4% |
6.1% |
5.5% |
Pneumonia/ … / asthma (yes = 1, no = 0) |
11.9% |
12.0% |
15.2% |
9.1% |
Diabetes (yes = 1, no = 0) |
10.7% |
11.5% |
12.1% |
10.3% |
Depression (yes = 1, no = 0) |
1.1% |
1.2% |
1.3% |
1.0% |
Cancer (yes = 1, no = 0) |
3.5% |
1.6% |
4.0% |
1.2% |
Prostatitis (yes = 1, no = 0) |
6.2% |
4.0% |
6.3% |
3.9% |
Osteoporosis/osteoarthritis (yes = 1, no = 0) |
20.0% |
21.3% |
24.0% |
17.9% |
Fracture (yes = 1, no = 0) |
5.5% |
3.9% |
6.1% |
3.4% |
Parkinson’s disease (yes = 1, no = 0) |
0.4% |
0.9% |
0.6% |
0.8% |
Nervous system disease (yes = 1, no = 0) |
4.8% |
6.1% |
7.3% |
4.1% |
Socioeconomics |
Education: Primary school or below |
25.3% |
30.4% |
27.7% |
28.3% |
Middle school |
30.2% |
35.1% |
30.5% |
34.8% |
High/polytechnic school |
27.9% |
23.8% |
25.8% |
25.7% |
Colleague or above. |
16.6% |
10.7% |
16.1% |
11.2% |
Monthly income (range: 0–10,000 Yuan) |
2.6 |
2.4 |
2.5 |
2.5 |
Main occupation: Professional/administrative |
25.4% |
17.1% |
24.2% |
18.2% |
Clerk/service |
19.9% |
19.1% |
17.9% |
20.8% |
Physical labor |
42.8% |
50.3% |
44.5% |
48.7% |
Other |
12.0% |
13.6% |
13.4% |
12.4% |
Relational and contextual factors |
Spouse accompany (yes = 1, no = 0) |
80.2% |
75.7% |
78.1% |
77.5% |
Average number of strong ties to confide |
4.3 |
3.7 |
4.2 |
3.7 |
Knowing medical staff (yes = 1, no = 0) |
21.0% |
13.5% |
19.1% |
15.2% |
Average number of community facilities |
5.4 |
5.2 |
5.4 |
5.2 |
GDP per capita in the district (unit: 10,000 Yuan) |
1.4 |
1.5 |
1.5 |
1.4 |
Medical staff per 10,000 residents in the district |
10.8 |
10.7 |
10.9 |
10.6 |