Table 1.

Demographic Data

	Treated (n = 92)	Untreated (n = 57)	P Value
Gestational age, weeks mean ± SD	25.3 ± 1.3	26.8 ± 1.2	<0.001
Birth weight, g mean ± SD	679.2 ± 129.7	833.4 ± 184.3	<0.001
Postmenstrual age at the examination, weeks mean ± SD	32.6 ± 1.2	32.9 ± 1.4	0.249
N of images, mean ± SD	5.7 ± 2.5	5.4 ± 2.7	0.452