Table 2.

Z scores of antenatal regional brain volumes in fetuses that < 32 weeks gestation in comparison with the normal range derived from fetuses that subsequently delivered at term.

Variable	Mean and SD Z score preterm group	95% confidence interval of the difference	P value
Supratentorial brain volume (cm3)	0.25 (1.422)	−0.278 – 0.800	0.338
Ventricular volume (cm3)	0.083 (1.442)	−0.596–0.693	0.878
Extracerebral cerebrospinal fluid volume (cm3)	−1.667 (1.632)	−2.374- −0.936	<0.001
Cerebellar volume (cm3)	−0.542 (1.474)	−01.211–0.105	0.096
Cortical volume (cm3)	−2.042 (2.074)	−2.646- −1.414	<0.001