1.
两组儿童性别及年龄比较
| 组别 | 例数 | 性别两组儿童性别及年龄比较 (男/女, 例) |
入组年龄两组儿童性别及年龄比较 [M(P25, P75), 岁] |
| 对照组 | 30 | 15/15 | 6.0(4.2, 10.0) |
| 心衰组 | 40 | 23/17 | 4.0(0.6, 10.0) |
| Z/χ2值 | 2.46 | 7.46 | |
| P值 | 0.12 | 0.91 |
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