Odds Ratios for Preeclampsia According to Circulating Angiogenic Factors Measured in Samples Collected at Study Entry.*

*Data are presented as mean ± standard deviation. OR denotes odds ratio, CI confidence interval. Odds ratios represent the odds of developing preeclampsia for a two-fold increase of the factor among preeclamptic subjects compared to controls.†Odds ratios were adjusted for gestational age at sample collection, smoking, maternal age, race or ethnic group, body mass index and treatment group.