NEC_deidentified.dta

Data used in a case-crossover study of neonatal intensive care infants born at ≤ 32 weeks’ gestation who were admitted to 5 central Ohio intensive care units from January 2012-July 2016 and developed necrotizing enterocolitis (NEC) Bell Stage ≥2. Each patient served as their own control, with exposure during the 48-hour period just prior to NEC onset (hazard period) being compared to a preceding 48-hour control period, thus eliminating confounding by patient factors fixed between both intervals. The goal was to evaluate the short-term effects of feed fortification, feed volume increase, and PRBC transfusion on the odds of developing NEC.<br><br>All dates were scrambled with a fixed number of days.