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The 'odds' that they give you at the nuchal scan - where do these come from?

(3 Posts)
beachyhead Mon 07-Feb-05 17:32:40

I was just trying to work out these odds that they give you - are they from statistics which are continually updated or are they from some mega survey at some point back in the past? Who creates them and are they the same from country to country?

Its just that they are SO important and I just want to know where they come from. Are there any health professionals out there (or any one else) who might know....

You can tell I'm nervous about next week, can't you?

beachyhead Mon 07-Feb-05 18:06:35

bump

SoupDragon Mon 07-Feb-05 18:15:12

I think they're constantly updated because I had to fill in a "result" form and send it back after giving birth.

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