First‐trimester screening for trisomy 21 by free beta‐human chorionic gonadotropin and pregnancy‐associated plasma protein‐A: impact of maternal and pregnancy characteristics

O. Kagan, K.; Wright, D.; Spencer, K.; S. Molina, F.; H. Nicolaides, K.

doi:10.1002/uog.5332

Public

First‐trimester screening for trisomy 21 by free beta‐human chorionic gonadotropin and pregnancy‐associated plasma protein‐A: impact of maternal and pregnancy characteristics

Shared by NobleBlocks on Apr 23, 2008 • 12:00 AM UTC

Authors:

K. O. Kagan

D. Wright

K. Spencer

Abstract

Abstract Objectives To use multiple regression analysis to define the contribution of maternal variables that influence the measured concentration of free beta‐human chorionic gonadotropin (β‐hCG) and pregnancy‐associated plasma protein‐A (PAPP‐A), and the interaction between these covariates, in fi...

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