| 项目 | <28周(n = 34) | 28~32周(n = 24) | >32周(n = 4) | χ2/F | P |
| 新生儿性别 |
|
|
| 0.026 | 0.987 |
| 男 | 16 | 11 | 2 |
|
|
| 女 | 18 | 13 | 2 |
|
|
| 出生体重(g) |
|
|
| 11.817 | 0.019 |
| <1000 | 8 | 4 | 1 |
|
|
| 1000~1500 | 18 | 4 | 1 |
|
|
| 1501~2000 | 8 | 16 | 2 |
|
|
| >2000 | 0 | 0 | 0 |
|
|
| 胎数 |
|
|
| 7.933 | 0.019 |
| 单胎 | 22 | 21 | 1 |
|
|
| 多胎 | 12 | 3 | 3 |
|
|
| 分娩方式 |
|
|
| 0.556 | 0.757 |
| 自然分娩 | 11 | 9 | 2 |
|
|
| 剖宫产 | 23 | 15 | 2 |
|
|
| 早产儿脑损伤 |
|
|
| 9.698 | 0.008 |
| 是 | 20 | 6 | 0 |
|
|
| 否 | 14 | 18 | 4 |
|
|
| 宫内感染性肺炎 |
|
|
| 6.014 | 0.049 |