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Table 4 Associations between discordances of fetal growth parameters in the third-trimester with growth discordance by using multivariate logistic regression modela

From: Predictive value of prenatal ultrasound parameters for dichorionic growth discordant twins

Parameter Early third-trimester Late third-trimester
B S.E. Wald P OR 95%CI B S.E. Wald P OR 95% CI
BPD 0.20 0.07 7.82 0.005 1.23 1.06–1.39 0.16 0.05 8.58 0.003 1.17 1.05–1.30
HC 0.28 0.10 7.92 0.005 1.32 1.09–1.61 0.17 0.07 6.66 0.010 1.19 1.04–1.35
AC 0.21 0.05 15.48 < 0.001 1.23 1.11–1.36 0.18 0.04 21.55 < 0.001 1.20 1.11–1.29
FL 0.27 0.06 17.84 < 0.001 1.31 1.16–1.49 0.32 0.05 34.79 < 0.001 1.38 1.24–1.53
EFW 0.16 0.04 19.81 < 0.001 1.17 1.09–1.26 0.16 0.03 38.23 < 0.001 1.17 1.11–1.23
  1. aBPD biparietal diameter; HC head circumference; AC abdominal circumference; FL femur length; EFW estimated fetal weight; OR odds ratio; CI confidence interval
  2. Note: relative risk is more suitable when prevalence of an outcome is more than 10%, despite common application and acceptance of OR