2.
两组患儿一般资料的比较
| 组别 | n | 年龄(x±s, 岁) | 体重(x±s, kg) | 性别(例) | |
| 男 | 女 | ||||
| 对照组 | 120 | 5±4 | 18±8 | 64 | 56 |
| PICU组 | 120 | 5±3 | 17±8 | 55 | 65 |
| t(χ2)值 | 0.575 | 0.06 | (0.24) | ||
| P值 | 0.12 | 0.23 | 0.29 | ||
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