1.
217例患儿常见异物类型
| 异物类型 | 病例数 | 百分比(%) |
| 注：“其他”包括磁铁2例，铁钉1例，不明物1例。 | ||
| 硬币 | 99 | 45.6 |
| 硬质/尖锐食物 | 45 | 20.7 |
| 金属 | 35 | 16.1 |
| 纽扣电池 | 24 | 11.1 |
| 塑料 | 10 | 4.6 |
| 其他 | 4 | 1.9 |
| 合计 | 217 | 100 |
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