Table 1. Demographic characteristics of respondents (weighted).
| Overall (N = 9,942) | |
|---|---|
| Variable | ± SD/n(%) |
| Age, Mean | 59.93±8.34 |
| Age | |
| Aged 45–60 | 5543 (55.75) |
| Aged 60–75 | 3800 (38.22) |
| Aged 75–90 | 593 (5.96) |
| Aged 90+ | 6 (0.06) |
| Gender | |
| Male | 4680 (47.07) |
| Female | 5262 (52.93) |
| Educational attainment | |
| Illiterate | 2488 (25.03) |
| Primary school | 4058 (40.82) |
| Junior high school | 2182 (21.95) |
| High school (secondary specialized school) | 1029 (10.35) |
| Some college | 133 (1.34) |
| Bachelor degree or above | 52 (0.52) |
| Residency | |
| Rural | 6355 (63.92) |
| Urban | 3587 (36.08) |
| Household economic status | |
| Very poor | 1821 (18.32) |
| Poor | 1959 (19.70) |
| Fair | 2035 (20.47) |
| Good | 2051 (20.63) |
| Very good | 2076 (20.88) |
| The presence of hypertension | |
| Yes | 3852 (38.74) |
| No | 6090 (61.26) |
| The presence of diabetes | |
| Yes | 827 (8.32) |
| No | 9115 (91.68) |
| The presence of cardiovascular disease | |
| Yes | 1565 (15.74) |
| No | 8377 (84.26) |
| Self-rated health status | |
| Very poor | 1281 (12.88) |
| Poor | 3571 (35.92) |
| Fair | 3279 (32.98) |
| Good | 1178 (11.85) |
| Very good | 633 (6.37) |
| Cognitive function, Mean | 13.53±5.57 |