Table 1.
Demographic characteristics of pregnant women with syphilis infection in China in 2013, by regiona.
| Characteristic | Total | Region | P value | ||
|---|---|---|---|---|---|
| Eastern | Central | Western | |||
| Maternal age (years) | |||||
| <20 | 1138 (7.2%) | 437 (6.6%) | 221 (5.8%) | 480 (8.8%) | <0.001 |
| 20–34 | 12627 (79.5%) | 5310 (80.2%) | 3072 (80.9%) | 4245 (77.6%) | |
| ≥35 | 2119 (13.3%) | 872 (13.2%) | 505 (13.3%) | 742 (13.6%) | |
| Ethnicity | |||||
| Han | 13100 (82.5%) | 6229 (94.1%) | 3558 (93.7%) | 3313 (60.6%) | <0.001 |
| Minority | 2784 (17.5%) | 390 (5.9%) | 240 (6.3%) | 2154 (39.4%) | |
| Residency status | |||||
| Local resident | 12170 (76.6%) | 4233 (64.0%) | 3304 (87.0%) | 4633 (84.7%) | <0.001 |
| Migrating people | 3714 (23.4%) | 2386 (36.0%) | 494 (13.0%) | 834 (15.3%) | |
| Marital status | |||||
| Single | 643 (4.0%) | 406 (6.1%) | 95 (2.5%) | 142 (2.6%) | <0.001 |
| First married | 13658 (86.0%) | 5662 (85.5%) | 3339 (87.9%) | 4657 (85.2%) | |
| Remarried | 1267 (8.0%) | 397 (6.0%) | 302 (8.0%) | 568 (10.4%) | |
| Cohabitated | 235 (1.5%) | 105 (1.6%) | 47 (1.2%) | 83 (1.5%) | |
| Divorced/widowed | 81 (0.5%) | 49 (0.7%) | 15 (0.4%) | 17 (0.3%) | |
| Education | |||||
| Primary or lower | 2982 (18.8%) | 955 (14.4%) | 469 (12.3%) | 1558 (28.5%) | <0.001 |
| Junior middle school | 8290 (52.2%) | 3313 (50.1%) | 2166 (57.0%) | 2811 (51.4%) | |
| Senior middle school | 2921 (18.4%) | 1441 (21.8%) | 743 (19.6%) | 737 (13.5%) | |
| College or above | 896 (5.6%) | 502 (7.6%) | 191 (5.0%) | 203 (3.7%) | |
| Unknown | 795 (5.0%) | 408 (6.2%) | 229 (6.0%) | 158 (2.9%) | |
| Occupation | |||||
| Farmers | 5828 (36.7%) | 1315 (19.9%) | 1294 (34.1%) | 3219 (58.9%) | <0.001 |
| Housewife/unemployed | 6521 (41.1%) | 3477 (52.5%) | 1630 (42.9%) | 1414 (25.9%) | |
| Others | 3535 (22.3%) | 1827 (27.6%) | 874 (23.0%) | 834 (15.3%) | |
| Gravidity | |||||
| 1 | 4065 (25.6%) | 1571 (23.7%) | 1200 (31.6%) | 1294 (23.7%) | <0.001 |
| 2-3 | 8637 (54.4%) | 3656 (55.2%) | 1953 (51.4%) | 3028 (55.4%) | |
| >3 | 3182 (20.0%) | 1392 (21.0%) | 645 (17.0%) | 1145 (20.9%) | |
| Parity | |||||
| 0 | 5289 (33.3%) | 2302 (34.8%) | 1331 (35.0%) | 1656 (30.3%) | <0.001 |
| 1-2 | 9778 (61.6%) | 4013 (60.6%) | 2331 (61.4%) | 3434 (62.8%) | |
| >3 | 817 (5.1%) | 304 (4.6%) | 136 (3.6%) | 377 (6.9%) | |
| First antenatal care (gestational weeks) | |||||
| ≤14 | 6379 (40.2%) | 2556 (38.6%) | 1687 (44.4%) | 2136 (39.1%) | <0.001 |
| 15–28 | 4175 (26.3%) | 2003 (30.3%) | 824 (21.7%) | 1348 (24.7%) | |
| 29–37 | 2007 (12.6%) | 849 (12.8%) | 431 (11.3%) | 727 (13.3%) | |
| >37 | 2665 (16.8%) | 861 (13.0%) | 718 (18.9%) | 1086 (19.9%) | |
| Unknown | 658 (4.1%) | 350 (5.3%) | 138 (3.6%) | 170 (3.1%) | |
aValues are given as number (percentage) unless otherwise indicated.