A Comparison of Prediction of Adverse Perinatal Outcomes between Hadlock and INTERGROWTH-21^st Standards at the Third Trimester

Table 2

Hazard ratios and 95% confidence interval for adverse perinatal outcomes among infants who had percentile of < of the EFWc according to the INTERGROWTH and Hadlock method.

Groups of infants	Unadjusted model				Adjusted model^∗
	Hazard ratio	95% CI	Wald χ^2 value	P value	Hazard ratio	95% CI	Wald χ^2 value	P value
INTERGROWTH-EFWc
≥ Percentile 5	1.0				1.0
< Percentile 5	18.4	8.9-38.0	61.9	<0.001	17.5	7.7-39.6	47.1	<0.001
Hadlock-EFWc
≥ Percentile 5	1.0				1.0
< Percentile 5	35.0	15.2-80.9	69.3	<0.001	35.0	13.9-88.5	56.8	<0.001

model controlling for maternal age (year), parity (nulliparous or multiparity), gestational diabetes mellitus (yes or no), gestational hypertension (yes or no), gestational age at last scan (< or ⩾ 35 weeks), and ART conception (yes or no).