EPO and anemia (phenotype): Regarding neonatal management, blood transfusion (80.6 vs. 58.0%), erythropoietin for anemia (93.8 vs. 92.3%), invasive ventilation (46 vs. 30 days), supplemental oxygen (85 vs. 66 days), oxygen use at 36 weeks of corrected age (68.5 vs. 64.6%), and parenteral nutrition (93.8 vs. 91.4%) were significantly more common, time from birth to full enteral feeding (15 vs. 13 weeks) was significantly longer, and use of CPAP (29 vs. 32 days) was significantly lower in the TR-ROP group compared to the non-TR-ROP group.