4.
3组患儿致敏变应原种类数分布 [n（%）]
| 组别 | 阳性例数 | 吸入变应原sIgE阳性种类 | |||
| 1种 | 2种 | 3种 | ≥ 4种 | ||
| 哮喘组 | 47 | 25(53.2) | 10(21.3) | 5(10.6) | 7(14.9) |
| 鼻炎组 | 32 | 13(40.6) | 12(37.5) | 5(15.6) | 2(6.3) |
| 鼻炎并哮喘组 | 113 | 49(43.4) | 40(35.4) | 17(15.0) | 7(6.2) |
| χ2值 | 8.21 | ||||
| P值 | 0.413 | ||||
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