Table 1.
General characteristics of the study participants.
| Age group (years) |
||||
|---|---|---|---|---|
| Overall | 60–69 | 70-79 | ≥80 | |
| Demographic characteristics | N = 4417, n(%) | 1852(41.9) | 1490(33.7) | 1075(24.3) |
| Gender | ||||
| Male | 2058(46.6) | 835(45.1) | 717(48.1) | 506(47.1) |
| Female | 2359(53.4) | 1017(54.9) | 773(51.9) | 569(52.9) |
| Age, median (IQR, years) | 71.7 (66.2–79.8) | 65.3 (62.6–67.7) | 74.1 (71.8–76.9) | 83.8 (81.8–86.4) |
| Living status | ||||
| Live alone | 463(10.5) | 75(4.1) | 162(10.9) | 226(21.0) |
| Live with family or friends | 3954(89.5) | 1777(96.0) | 1328(89.1) | 849(79.0) |
| Education attainment | ||||
| Primary school | 2209(50.0) | 673(36.3) | 745(50.0) | 791(73.6) |
| Secondary school2 | 1450(32.8) | 816(44.1) | 449(30.1) | 185(17.2) |
| High school | 543(12.3) | 271(14.6) | 202(13.6) | 70(6.5) |
| Bachelor's degree or above | 215(4.9) | 92(5.0) | 94(6.3) | 29 (2.7) |
| Self-evaluation of health situation | ||||
| Very healthy | 149(3.4) | 90(4.9) | 37(2.5) | 22(2.1) |
| Healthy | 1594(36.1) | 803(43.4) | 497(33.4) | 294(27.4) |
| Normal | 2242(50.8) | 849(45.8) | 785(52.7) | 608(56.6) |
| Unhealthy | 432(9.8) | 110(5.9) | 171(11.5) | 151(14.1) |
| Monthly household income, (Chinese yuan) | ||||
| <2000 | 696(20.3) | 202(10.9) | 238(16.0) | 256(23.8) |
| 2000-4999 | 1557(45.4) | 682(36.8) | 555(37.3) | 320(29.8) |
| 5000-7999 | 801(23.3) | 364(19.7) | 264(17.7) | 173(16.1) |
| ≥8000 | 378(11.0) | 201(10.9) | 106(7.1) | 71(6.6) |
| Unknown | 985(22.3) | 403(21.8) | 327(22.0) | 255(23.7) |
| Specific underlying diseases | ||||
| Chronic respiratory diseases | 377 (7.9) | 113 (6.2) | 124 (7.4) | 140 (10.8) |
| Diabetes | 969 (20.2) | 312 (17.1) | 370 (22.2) | 287 (22.1) |
| Cardiovascular disease | 995 (20.8) | 225 (12.3) | 371 (22.2) | 399 (30.7) |
1
IQR: interquartile range.
2
In China, secondary school education refers to the three-year period between primary school and high school. The ages of secondary school students are approximately 12 to 15 years old.
3
1 US dollar≈6.43 Chinese yuan.