Fig. 1
A Weight at birth standardized using birth percentile: the figure shows how the mean percentile of OA and DA is significantly inferior to the control group (p < .05) while the ones of IA and JA do not show a statistically significant difference with the control group; the interquartile ranges, expressing the 50% of the patients of every group, present lower birth percentile values in OA and DA while the ones of JA and IA, and the control group assume higher values and are similar to each other. B–F Relation between birth weight, birth percentile, and gestational age, see the text for the description