Preeclampsia: Definitions, screening tools and diagnostic criteria in the supersonic era

Table 1 Uterine artery doppler studies for the prediction of preeclampsia

Ref.	Weeks of evaluation (wk)	Sensitivity	Specificity
Campbell et al[10]	16-18	68%	69%
Valensise et al[11]	22	74%	97.5%
Jacobson et al[12]	24	44%	73%
Arduini et al[13]	18-20	64%	94%
Ziemmermann et al[14]	21-24	56%	83%
Bower et al[15]	18-22	75%	86%
Chan et al[16]	20	27%	97%
North et al[17]	19-24	27%	90%