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Table 5 Probability of SGA based on serum individual biomarker level and their combination

From: Quad test for fetal aneuploidy screening as a predictor of small-for-gestational age fetuses: a population-based study

Biomarkers

The models predicting small-for-gestational age (probability)

AFP MoMs

ln (Odds ratio) = −3.1403 + 0.2863 (AFP MoM)

b-hCG MoMs

ln (Odds ratio) = −2.8127 - 0.0042 (b-hCG MoM)

uE3 MoMs

ln (Odds ratio) = − 2.0289 - 0.7609 (uE3 MoM)

IHA MoMs

ln (Odds ratio) = − 3.4347 - 0.5558 (b-hCG MoM)

Combined biomarkers

ln (Odds ratio) = −4.4908 + 1.6877 (AFP MoM) + 0.8965 (IHA MoM) - 0.3248 (AFP MoM x IHA MoM) - 0.6725 (AFP MoM x uE3 MoM)