Table 1. Basic characteristics of the study population (n = 3, 479).
| Variable | Category | Total N(%) | Urban N(%) | Rural N(%) |
|---|---|---|---|---|
| Region | Western | 987 (25.30) | 388 (21.29) | 599 (29.46) |
| Central | 843 (34.14) | 362 (33.80) | 481 (34.48) | |
| Eastern | 1649 (40.57) | 713 (44.91) | 936 (36.06) | |
| Marital status | Married | 2909 (83.05) | 1239 (80.69) | 1670 (85.32) |
| Sex | Male | 1592 (46.15) | 655 (45.28) | 937 (47.06) |
| Age level | 45–59 | 1152 (32.27) | 463 (31.52) | 689 (33.04) |
| 60–69 | 1366 (38.65) | 588 (39.68) | 778 (37.58) | |
| 70– | 961 (29.08) | 412 (28.80) | 549 (29.37) | |
| Household income* | Poor | 870 (22.56) | 321 (18.38) | 549 (26.90) |
| Near poor | 870 (23.17) | 260 (16.70) | 610 (29.87) | |
| Middle income | 869 (28.51) | 425 (33.94) | 444 (22.87) | |
| High income | 870 (25.76) | 457 (30.98) | 413 (20.36) | |
| Education | Uneducated | 977 (25.97) | 272 (16.88) | 705 (35.39) |
| Primary school | 1523 (42.70) | 637 (41.36) | 886 (44.09) | |
| Junior middle school | 632 (19.27) | 313 (23.05) | 319 (15.35) | |
| High school and above | 347 (12.07) | 241 (18.72) | 106 (5.17) | |
| Having medical insurance | Yes | 3249 (93.58) | 1368 (94.22) | 1181 (92.91) |
| Taking medicine | Yes | 3090 (88.23) | 1296 (87.73) | 1794 (88.55) |
Notes.
a
Household income were categorized into 4 groups based on the 25th, 50th, and 75th percentiles-poor (0–1,305 RMB), near poor (1,305–16,490 RMB), middle income (16,490-49,595 RMB), and rich (above 49,595 RMB).