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Figure 2 | BMC Pregnancy and Childbirth

Figure 2

From: A multi-centre phase IIa clinical study of predictive testing for preeclampsia: improved pregnancy outcomes via early detection (IMPROvED)

Figure 2

The effect of study design on sample size calculations and conclusions that can be drawn from screening studies. (A) Women are randomised to having or not having the screening test performed. (B) Women have the screening test performed and those who screen as high risk are randomised to having an intervention or having the result concealed.

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