Figure 4

IUGR infants are older when they exhibit worse ROP disease than non IUGR infants. There was no statistically significant difference between SGA and AGA when comparing days of life (DOL) at worst stage of disease (AGA n = 300, SGA n = 43; p = 0.822 by a two-tailed t-test). There was a statistically significant difference between IUGR and non-IUGR infants in DOL at worst stage of disease, with IUGR infants being relatively older than non-IUGR infants (non-IUGR n = 256, IUGR n = 86; p < 0.0001 by two-tailed t-test). Symbols represent means and error bars indicate standard deviation.