Results
A total of 800 infants were enrolled in the NICHD NRN Hydrocortisone Trial (421 boys [52.7%] and 379 girls [47.3%]) (eFigure 1 in Compared with infants within lower quartiles of baseline risk, infants in the higher quartiles had a lower median birth weight (800 [IQR, 690-925] g in quartile 1 vs 630 [IQR, 530-710] g in quartile 4) (