Fig. 2From: Oxygenation index in the first three weeks of life is a predictor of bronchopulmonary dysplasia grade in very preterm infantsOxygenation index trajectory estimates over the first three weeks of life after logarithmic transformation using generalized additive mixed modeling. The red line represents the trajectory estimates. The shade represents the standard error of the trajectory estimates. The gray dots represent the raw OI values at the indicated time points. The raw OI values for each infant were connected by a line. The log scale is shown on the left Y-axis, and the linear scale is shown on the rightBack to article page