Ret-He Bayley Data Set Deidentified

This study aims to determine if there is an association between RET-He or iron supplementation in preterm infants and their 24-month Bayley Scales of Infant and Toddler Development, third edition (Bayley-III) cognitive score. We hypothesized that RET-He (representing iron sufficiency) or higher average daily iron supplementation would positively correlate with Bayley-III cognitive score at 24 months adjusted age.