Table 4. Differences between gestational age of EDD and fetal biometry and compared between the maternal ages.

Difference in gestational age estimation of study participants.

Difference in gestational age	Maternal age <30 years group N = 77	Maternal age ≥30 years group N = 23	p-value
Head circumference median (IQR) days	−12.5(−22.5 to 1.0)	5(−15 to 17)	<0.001∗
Abdomen circumference median (IQR) days	−3(−16.5 to 10.5)	14(−1 to 25)	<0.001∗
Femoral length median (IQR) days	−5(−19 to 8)	10(−3 to 23)	<0.001∗
Biparietal diameter median (IQR) days	−7(−17 to 6)	12(−3 to 20)	<0.001∗

Notes.

An asterisk (*) indicates significant difference.