Fig. 1From: Critical period of oxygen supplementation and invasive ventilation: implications for severe retinopathy of prematurityAssociation of time-weighted average FiO2 and invasive ventilation with treated ROP. (a) at each postnatal age and (b) at each postmenstrual age. Adjusted for gestational age, birthweight and invasive ventilation at each week (*p < 0.05). FiO2, Fraction of inspired oxygen; ROP, retinopathy of prematurityBack to article page