Table 2: Different birth weight and gestational age between infants with or without retinopathy of prematurity.

VariablesInfants without any ROP Infants with any ROP value

Birth weight (g), mean (SD)898.6 (102.6)898.7 (102.6)
Gestational age (weeks), mean (SD)29.1 (2.0)27.9 (1.6)

of variance.
SD: standard deviation.