Table 1.
Baseline characteristics of the participants in 2017 and 2022
| Variable | N (%) [2017] | N (%) [2022] | P |
|---|---|---|---|
| Total | 4780 (100.0) | 3734 (100.0) | |
| Sex, male | 2178 (45.6) | 1340 (35.9) | < 0.001 |
| Age, mean ± SD | 50.8 ± 12.2 | 55.2 ± 13.4 | < 0.001 |
| < 44 | 2008 (42.0) | 1166 (31.3) | |
| 44~59 | 2169 (45.4) | 1577 (42.2) | |
| > 60 | 603 (12.6) | 991 (26.5) | |
| Ethnicity | |||
| Hui | 1334 (27.9) | 1127 (30.2) | |
| Han | 3321 (69.5) | 2510 (67.2) | |
| Others | 125 (2.6) | 97 (2.6) | |
| Living area | |||
| Rural | 2358 (49.3) | 1835 (49.1) | |
| Town | 2422 (50.7) | 1899 (50.9) | |
| Jobs | |||
| Farmer or worker | 2716 (56.8) | 2200 (58.9) | |
| Civil servant or Other | 2064 (43.2) | 1534 (41.1) | |
| Province | < 0.001 | ||
| Yinchuan | 800 (16.7) | 1150 (30.8) | |
| Wuzhong | 841 (17.6) | 426 (11.4) | |
| Shizuishan | 710 (14.9) | 590 (15.8) | |
| Zhongwei | 730 (15.3) | 826 (22.1) | |
| Guyuan | 1699 (35.5) | 742 (19.9) |