Table 1.

Patient characteristics

	IUGR (n = 19)	Non-IUGR (n = 37)	P value
Gestational age (weeks), median [25%, 75%]	29.4 [28.0, 30.7]	29.3 [26.0, 31.1]	0.869
Body weight (g), median [25%, 75%]	720 [547, 987]	1226 [858, 1496]	< 0.001
Body height (cm), median [25%, 75%]	31.1 [29.1, 35.8]	37.0 [33.8, 39.0]	0.003
Sex (male, n)	14	24	0.290
In vitro fertilization (n)	1	6	0.241
Hypertensive disorders of pregnancy (n)	9	3	0.001
Twin pregnancy (n)	1	10	0.202
Broncho pulmonary dysplasia (n)	12	18	0.086
Abnormal MRI findings(n)	1	10	0.241
Retinopathy of prematurity (n)	2	5	0.749

The differences between groups were analyzed by Mann-Whitney U test or chi-square test