| 变量 | 研究组(n = 215) | 对照组(n = 568) | T/c2 | P值 |
| 年龄 | 28.34 ± 5.314 | 27.73 ± 4.33 | 1.649 | 0.100 |
| 孕周 | 30.01 ± 2.054 | 29.60 ± 2.889 | 1.860 | 0.063 |
| 教育水平 |
|
|
|
|
| 初中 | 20 (9.30%) | 113 (19.89%) | 6.781 | 0.079 |
| 高中 | 26 (12.09%) | 94 (16.55%) | ||
| 大专 | 80 (37.21%) | 184 (32.39%) | ||
| 本科及以上 | 89 (41.40) | 177 (31.16%) | ||
| 既往怀孕次数 |
|
|
|
|
| 0 | 77 (35.81%) | 207 (36.44%) | 1.174 | 0.759 |
| 1 | 70 (32.56%) | 180 (31.69%) | ||
| 2 | 51 (23.72%) | 111 (19.54%) | ||
| ≥3 | 17 (7.91%) | 70 (12.32%) | ||
| 既往分娩次数 |
|
|
|
|
| 0 | 98 (45.58%) | 306 (53.87%) | 1.336 | 0.513 |
| 1 | 108 (50.23%) | 237 (41.73%) | ||
| 2 | 9 (4.19%) | 25 (4.40%) | ||
| 既往流产次数 |
|
|
|
|
| 0 | 145 (67.44%) | 316 (55.63%) | 2.643 | 0.450 |
| 1 | 53 (24.65%) | 181 (31.87%) | ||
| 2 | 12 (5.58%) | 52 (9.15%) | ||
| ≥3 | 5 (2.33%) | 19 (3.35%) | ||
| 夫妻关系 |
|
|
|
|
| 好 | 211 (98.14%) | 548 (96.48%) | 0.687 | 0.407 |
| 一般 | 4 (1.86%) | 20 (3.52%) | ||
| 怀孕是否计划中 |
|
|
|
|
| 是 | 153 (71.16%) | 376 (66.20%) | 0.579 | 0.543 |
| 否 | 62 (28.84%) | 192 (33.80%) | ||
| 与自己父母关系 |
|
|
|
|
| 好 | 213 (99.07%) | 549 (96.65%) | 1.020 | 0.621 |
| 一般 | 2 (0.93%) | 19 (3.35%) | ||
| 与公婆关系 |
|
|
|
|
| 好 | 169 (78.60%) | 488 (85.92%) | 2.692 | 0.260 |
| 一般 | 45 (20.93%) | 77 (13.56%) | ||
| 差 | 1 (0.47%) | 3 (0.53%) |