Table 1.
Characteristic of women in exposed and unexposed group.
| Characteristics | Categories | Exposed (n = 106) | Unexposed (n = 250) | p |
|---|---|---|---|---|
| Site | Wuxi | 19 (17.9) | 42 (16.8) | 0.1 |
| Yueyang | 58 (54.7) | 111 (44.4) | ||
| Yixing | 29 (27.4) | 97 (38.8) | ||
| Education | Middle schoool and below | 22 (20.8) | 120 (48.0) | <0.0001 |
| High school | 66 (62.3) | 96 (38.4) | ||
| College and above | 18 (16.9) | 34 (13.6) | ||
| Age (Years) | 18–30 | 38 (35.9) | 86 (34.4) | 0.9 |
| 31–40 | 52 (49.1) | 129 (51.6) | ||
| 41–45 | 16 (15.0) | 35 (14.0) | ||
| Marriage | Unmarried | 8 (7.6) | 17 (6.8) | 0.5 |
| In marriage | 95 (89.6) | 218 (87.2) | ||
| Divorced or widowed | 3 (2.8) | 15 (6.0) | ||
| Menstrual cycle | Regular | 94 (88.7) | 217 (88.6) | 1.0 |
| Not regular | 12 (11.3) | 28 (11.4) | ||
| Passive smoking | Yes | 47 (44.3) | 118 (47.4) | 0.6 |
| No | 59 (55.7) | 131 (52.6) | ||
| Current contraceptive methods usage | None | 6 (5.9) | 16 (6.7) | 0.4 |
| Pills | 7 (6.9) | 7 (2.9) | ||
| IUD | 60 (59.4) | 137 (57.1) | ||
| Condom | 27 (26.7) | 79 (32.9) | ||
| Others | 1 (1.1) | 1 (0.4) | ||
| Menarche age * | 14.1 ± 1.5 | 14.2 ± 1.8 | 0.4 | |
| Year of working * | 8.5 ± 6.8 | 9.5 ± 6.5 | 0.2 | |
| BPA | Detection rate | 88.9 | 45.2 | <0.0001 |
| geometric mean(95% CI) (ug/g cr) |
22.2 | 0.9 | <0.0001 | |
| (12.4, 39.8) | (0.7, 1.1) | |||
* mean + std.