RT Journal Article SR Electronic T1 Evaluating the risk of lower respiratory tract infection (LRTI) hospitalizations due to respiratory distress syndrome (RDS) in late preterm JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1718 VO 38 IS Suppl 55 A1 Katharina Buesch A1 Hoa Khong A1 Katherine Gooch YR 2011 UL http://erj.ersjournals.com/content/38/Suppl_55/1718.abstract AB Background: Premature birth results in underdeveloped lung function that increases their risk for respiratory infection and morbidity. The prevalence of RDS requiring intervention in premature births is significant, including those considered late preterm. RSV is the most prevalent cause for LRTI hospitalizations in infants. This study sought to determine what the independent risk of RDS diagnosis at birth has on LRTI hospitalisations in late preterm infants during the first year of life.Methods: Late premature infants (33-36 weeks gestational age) hospitalized within the first year of life for a LRTI were extracted from the Medical Claims I3 database (2000-2008). Univariate analyses were conducted to compare the differences between infants with and without an RDS event at birth. A multivariate model was developed to determine the independent association of RDS and LRTI hospitalization. Statistical significance was set at 0.05.Results: 31178 late preterm infants (52% male) were identified during the study timeline. 2297 (7.4%) late preterm infants were hospitalized due to a LRTI; a hyaline membrane disease or RDS diagnosis (ICD-9 code: 769) was observed in 962 late preterms (3%). Multiple logistic regression analysis showed a strong and significant relationship between RDS and LRTI hospitalization (OR 5.2, 95% CI 4.4–6.2).Conclusion: Late preterm infants with RDS event at birth are 5 times more likely to be hospitalized due to LRTI during the first year of life compared to late preterm without RDS event at birth. This risk factor should be considered when evaluating a premature infants risk for respiratory hospitalization.