当e0时,可能的原因是()A、计算错误B、婴儿死亡的漏报率太高C、0岁组婴儿死亡率高与1岁组D、该人群的死亡率较高E、资料收集过程有误
当e0时,可能的原因是()
- A、计算错误
- B、婴儿死亡的漏报率太高
- C、0岁组婴儿死亡率高与1岁组
- D、该人群的死亡率较高
- E、资料收集过程有误
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