In-hospital outcomes in preterm and small-for-gestational-age newborns: a cohort study

Objective: To compare in-hospital outcomes between small-for-gestational-age and appropriate-for-gestational-age preterm neonates who needed intensive care. Methods: A retrospective cohort study with preterm newborns, from January to December 2017. The results are presented as median, frequency, and odds ratio. Numerical variables were compared using the Wilcoxon test. Categorical variables were compared using the chi(2) test. We considered p<0.05 as significant. Results: Out of 129 preterm newborns included, 20.9% were small-for-gestational-age. Median gestational age was 31 2/7 weeks, birthweight was 1,450g, and length of hospital stay was 39 days. Preterm small-for-gestational-age newborns presented a higher chance of peri-intraventricular hemorrhage (odds ratio of 3.23; p=0.02), retinopathy of prematurity (odds ratio of 2.78 p=0.02), patent ductus arteriosus (odds ratio of 2.50; p=0.04) and a lower chance of presumptive early-onset sepsis (odds ratio of 0.37; p=0.03). Conclusion: Preterm small-for-gestational-age neonates were associated with peri-intraventricular hemorrhage, retinopathy of prematurity and patent ductus arteriosus. This emphasizes the need of special care for these neonates.