1.
不同年龄组患儿性别构成比较
| 年龄组 | 例数 | 男性 | 女性 | 男:女 |
| < 1岁 | 48 | 40 | 8 | 5.0 : 1 |
| 1岁~ | 25 | 18 | 7 | 2.6 : 1 |
| 3岁~ | 36 | 26 | 10 | 2.6 : 1 |
| 6~18岁 | 17 | 11 | 6 | 1.8 : 1 |
| χ2值 | 3.026 | |||
| P值 | 0.387 |
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