| 2.既往早产史 |
|
|
|
|
| 有 | 24 (4.96%) | 5 (1.03%) | 12.833 | 0.000 |
| 无 | 460 (95.04%) | 479 (98.97%) |
|
|
| 3.胎儿宫内窘迫 |
|
|
|
|
| 有 | 47 (9.71%) | 9 (1.86%) | 27.369 | 0.000 |
| 无 | 437 (90.29%) | 475 (98.14%) |
|
|
| 4.生殖系统畸形 |
|
|
|
|
| 有 | 15 (3.10%) | 5 (1.03%) | 5.105 | 0.024 |
| 无 | 469 (96.90%) | 479 (98.97%) |
|
|
| 5.怀孕次数(G) |
|
|
|
|
| ≤3次 | 366 (75.62%) | 393 (81.20%) | 4.449 | 0.035 |
| >3次 | 118 (24.38%) | 91 (18.80%) |
|
|
| 6.分娩次数(P) |
|
|
|
|
| >2次 | 63 (13.02%) | 33 (6.82%) | 10.407 | 0.001 |
| ≤2次 | 421 (86.98%) | 451 (93.18%) |
|
|
| 7.宫颈机能不全 |
|
|
|
|
| 有 | 20 (4.13%) | 2 (0.41%) | 16.078 | 0.000 |
| 无 | 464 (95.87%) | 482 (99.59%) |
|
|
| 8.体力劳动职业 |
|
|
|
|
| 是 | 343 (70.87%) | 268 (55.37%) | 36.119 | 0.000 |
| 否 | 141 (19.13%) | 216 (44.63%) |
|
|
| 9.孕期阴道流血 |
|
|
|
|
| 有 | 82 (16.94%) | 24 (4.96%) | 35.638 | 0.000 |
| 无 | 402 (83.06%) | 460 (95.04%) |
|
|
| 10.羊水量异常 |
|
|
|
|
| 有 | 37 (7.64%) | 16 (3.30%) | 8.803 | 0.003 |
| 无 | 447 (92.36%) | 468 (96.70%) |
|
|
| 11.妊娠期高血压疾病 |
|
|
|
|
| 有 | 122 (25.21%) | 28 (5.79%) | 69.709 | 0.000 |
| 无 | 362 (74.79%) | 456 (94.21%) |
|
|
| 12.胎膜早破 |
|
|
|
|
| 有 | 171 (35.33%) | 68 (14.05%) | 58.942 | 0.000 |
| 无 | 313 (64.66%) | 416 (85.95%) |
|
|
| 13.多胎 |
|
|
|
|
| 有 | 70 (14.46%) | 6 (1.24%) | 58.487 | 0.000 |
| 否 | 414 (85.54%) | 478 (98.76%) |
|
|
| 14.家庭人均收入 |
|
|
|
|
| ≤2 k | 19 (3.93%) | 5 (1.03%) |
|
|
| 2 k~10 k | 446 (92.15%) | 449 (92.77%) | 10.646 | 0.005 |
| >10 k | 19 (3.92%) | 30 (6.20%) |
|
|