Table 1.
Demographic characteristics of all participants
| Variable | Total (n=9,855) | Local residents (n=2,796) | Non-permanent residents (n=5,721) | Floating population (n=1,338) | p-value |
|---|---|---|---|---|---|
| Age (yr) | |||||
| < 30 | 1,207 (12.2) | 158 (5.7) | 793 (13.9) | 256 (19.1) | < 0.001 |
| 30-39 | 5,234 (53.1) | 1,504 (53.8) | 3,110 (54.4) | 620 (46.3) | |
| ≥ 40 | 3,414 (34.6) | 1,134 (40.6) | 1,818 (31.8) | 462 (34.5) | |
| Race | |||||
| Han | 9,319 (92.7) | 2,727 (97.5) | 5,376 (94.0) | 1,036 (77.4) | < 0.001 |
| Other | 716 (7.3) | 69 (2.5) | 345 (6.0) | 302 (22.6) | |
| Education | |||||
| Junior school or below | 4,648 (47.2) | 496 (17.7) | 3,304 (57.8) | 848 (63.4) | < 0.001 |
| High school | 2,544 (25.8) | 728 (26.0) | 1,529 (26.7) | 287 (21.4) | |
| College graduate or above | 2,510 (25.5) | 1,560 (55.8) | 851 (14.9) | 99 (7.4) | |
| Unknown | 153 (1.6) | 12 (0.4) | 37 (0.6) | 104 (7.8) | |
| Marital status | |||||
| Married | 8,933 (90.6) | 2,544 (91.0) | 5,272 (92.2) | 1,117 (83.5) | < 0.001 |
| Single/Divorced/Widowed | 922 (9.4) | 252 (9.0) | 449 (7.8) | 221 (16.5) | |
| Medical insurance | |||||
| No insurance | 2,288 (23.2) | 303 (10.8) | 1,590 (27.8) | 395 (29.5) | < 0.001 |
| Urban medical insurance | 3,951 (40.1) | 1,798 (64.3) | 1,874 (32.8) | 279 (20.9) | |
| Rural medical insurance | 1,294 (13.1) | 222 (7.9) | 833 (14.6) | 239 (17.9) | |
| Commercial insurance or others | 2,322 (23.6) | 473 (16.9) | 1,424 (24.9) | 425 (31.8) | |
| Monthly income (RMB) | |||||
| < 2,000 | 1,415 (14.4) | 283 (10.1) | 858 (15.0) | 274 (20.5) | < 0.001 |
| 2,000-3,999 | 2,989 (30.3) | 405 (14.5) | 2,079 (36.3) | 505 (37.7) | |
| 4,000-5,999 | 2,232 (22.6) | 577 (20.6) | 1,419 (24.8) | 236 (17.6) | |
| 6,000-9,999 | 1,571 (15.9) | 659 (23.6) | 809 (14.1) | 103 (7.7) | |
| ≥ 10,000 | 1,236 (12.5) | 776 (27.8) | 399 (7.0) | 61 (4.6) | |
| Unknown | 412 (4.2) | 96 (3.4) | 157 (2.7) | 159 (11.9) | |
| Age at menarche (yr) | |||||
| < 12 | 980 (9.9) | 369 (13.2) | 510 (8.9) | 101 (7.5) | < 0.001 |
| ≥ 12 | 8,768 (89.0) | 2,395 (85.7) | 5,147 (90.0) | 1,226 (91.6) | |
| Unknown | 107 (1.1) | 32 (1.1) | 64 (1.1) | 11 (0.8) | |
| Age at sex debut (yr) | |||||
| < 18 | 223 (2.3) | 33 (1.2) | 124 (2.2) | 66 (4.9) | < 0.001 |
| ≥ 18 | 9,214 (93.5) | 2,632 (94.1) | 5,380 (94.0) | 1,202 (89.8) | |
| Unknown | 418 (4.2) | 131 (4.7) | 217 (3.8) | 70 (5.2) | |
| No. of the sexual partners in the past 6 months | |||||
| 1 | 9,115 (92.5) | 2,599 (93.0) | 5,331 (93.2) | 1,185 (88.6) | 0.008 |
| ≥ 2 | 441 (4.5) | 105 (3.8) | 259 (4.5) | 77 (5.8) | |
| Unknown | 299 (3.0) | 92 (3.3) | 131 (2.3) | 76 (5.7) | |
| Having daughter(s) | |||||
| No | 3,847 (39.0) | 1,193 (42.7) | 2,147 (37.5) | 507 (37.9) | < 0.001 |
| Yes | 5,799 (58.8) | 1,560 (55.8) | 3,454 (60.4) | 785 (58.7) | |
| Unknown | 209 (2.1) | 43 (1.5) | 120 (2.1) | 46 (3.4) |
Values are presented as number (%). The chi-square test was used and p < 0.05 was considered as statistically significant.