在1970年代后期，在文盲母亲所生的孩子中，婴儿死亡率约为每1000名活胎婴儿中有110个夭折。

In the late 1970s, the infant mortality rate for the children of illiterate mothers was around 110 deaths per thousand live births.

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结论胎婴儿主要死亡原因为致死性畸形、感染和缺氧。

Conclusions The main causes of mortality in fetus and infants are fatal malformation, infection and anoxia.

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目的研究胎婴儿先天性畸形的发病情况，探讨畸形儿死亡原因。

Objective To investigate the incidence of congenital malformation and major causes of death in fetus and infants.

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