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八百分之一

八百分之一

八百分之一

八百分之一

1

The overall rate of incidence of Down's syndrome is one in every 800 births .

新生儿中唐氏综合症的总体发病率是八百分之一。

2

Down's syndrome or trisomy 21 occurs in around 1 in 800 births and older women are at higher risk.

唐氏综合症又称 21三体综合症，发生率大约在八百分之一，产妇年龄越大，发病率越高。

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