1.
年龄构成 [例（%）]
| 组别 | n | 婴幼儿期 | 学龄前期 | 学龄期 |
| 耐药组 | 81 | 10(12.3) | 49(60.5) | 22(27.2) |
| 敏感组 | 55 | 17(30.9) | 25(45.5) | 13(23.6) |
| χ2值 | 7.094 | 2.987 | 0.213 | |
| P值 | 0.008 | 0.084 | 0.645 |
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