Blencowe H, Cousens S, Chou D, Oestergaard M, Say L, Moller A, et al. Born too soon: the global epidemiology of 15 million preterm births. Reprod Health. 2013;10:S2.

Article  PubMed  PubMed Central  Google Scholar 

Liu L, Oza S, Hogan D, Perin J, Rudan I, Lawn J, et al. Global, regional, and national causes of child mortality in 2000–13. Lancet. 2015;385:430–40.

Article  PubMed  Google Scholar 

Richardson DK, Gray JE, Gortmaker SL, Goldmann DA, Pursley DM, McCormick MC, et al. Declining severity adjusted mortality: evidence of improving neonatal intensive care. Pediatrics. 1998;102:893–9.

Article  CAS  PubMed  Google Scholar 

Marshall G, Tapia JL, D’Apremont I, Grandi C, Barros C, Alegria A, et al. A new score for predicting neonatal very low birth-weight mortality risk in the NEOCOSUR South American Network. J Perinatol. 2005;25:577–82.

Article  PubMed  Google Scholar 

Jensen EA, Dysart K, Gantz MG, McDonald S, Bamat NA, Keszler M, et al. The diagnosis of bronchopulmonary dysplasia in very preterm infants: an evidence-based approach. Am J Respir Crit Care Med. 2019;200:751–9.

Article  CAS  PubMed  PubMed Central  Google Scholar 

Lee SK, McMillan DD, Ohlsson A, Pendray M, Synnes A, Whyte R, et al. Variations in practice and outcomes in the Canadian NICU Network: 1996-1997. Pedriatrics. 2000;106:1070–9.

Article  CAS  Google Scholar 

Zeitlin J, Draper ES, Kollee L, Milligan D, Boerch K, Agostino R, et al. Differences in rates and short-term outcome of live births before 32 weeks of gestation in Europe. Arch Dis Child Fetal Neonatal Ed. 2009;94:F158–F163.

PubMed  Google Scholar 

Horbar JD, Edwards EM, Greenberg LT, Profit J, Draper D, Helkey D, et al. Racial segregation and inequality in the neonatal intensive care unit for very low-birthweight and very preterm infants. JAMA Pediatr. 2019;173:455–61.

Article  PubMed  PubMed Central  Google Scholar 

Marshall G, Luque MJ, Gonzalez A, D’Apremont I, Musante G, Tapia JL. Center variability in risk-adjusted length of stay for very low birth weight infants in the NEOCOSUR South American Network. J Pediatr. 2012;88:524–30.

Article  Google Scholar 

Valenzuela-Stutman D, Marshall G, Tapia JL, Mariani G, Bancalari A, Gonzalez A, et al. Bronchopulmonary dysplasia: risk prediction models for very-low-birth-weight infants. J Perinatol. 2019;39:1645–54.

Article  Google Scholar 

Luque MJ, Tapia JL, Villarroel L, Marshall G, Musante G, Carlo W, et al. A risk prediction model for severe intraventricular hemorrhage in very low birth weight infants and the effect of prophylactic indomethacin. J Perinatol. 2014;34:43–48.

Article  CAS  PubMed  Google Scholar 

Shah PS, Lui K, Sjors G, Mirea L, Reichman B, Adams M, et al. Neonatal outcomes of very low birth weight and very preterm neonates: an international comparison. J Pediatr. 2016;177:144–52 e6.

Article  PubMed  Google Scholar 

Schmidt B, Asztalos EV, Roberts RS, Robertson CMT, Sauve RS, Whitfield M. Impact of bronchopulmonary dysplasia, brain injury, and severe retinopathy on the outcome of extremely low-birth-weight infants at 18 months: results from the trial of indomethacin prophylaxis in preterms. JAMA. 2003;289:1124–9.

Article  PubMed  Google Scholar 

Bassler D, Stoll BJ, Schmidt B, Asztalos EV, Roberts RS, Robertson CM, et al. Using a count of neonatal morbidities to predict poor outcome in extremely low birth weight infants: added role of neonatal infection. Pediatrics. 2009;123:313–8.

Article  PubMed  PubMed Central  Google Scholar 

Shahian DM, Normand SLT. What is a composite quality measure?. BMJ Qual Saf. 2008;17:384–6.

Google Scholar 

Soll RF. Benchmarking in neonatology: the Vermont Oxford Network. Semin Fetal Neonatal Med. 2004;9:55–65.

Google Scholar 

Breslow NE, Day NE. Statistical methods in cancer research. Volume II—The Design and Analysis of Cohort Studies. Lyon: International Agency for Research on Cancer; 1987. (IARC Scientific Publications No. 82).

Stoll BJ, Hansen NI, Sanchez PJ, Faix RG, Poindexter BB, Van Meurs KP, et al. Early onset neonatal sepsis: the burden of group B streptococcal and E. coli disease continues. Pediatrics. 2011;127:817–26.

Article  PubMed  PubMed Central  Google Scholar 

Stoll BJ, Hansen NI, Fanaroff AA, Wright LL, Carlo WA, Ehrenkranz RA, et al. Late-onset sepsis in very low birth weight neonates: the experience of the NICHD Neonatal Research Network. Pediatrics. 2002;110:285–91.

Article  PubMed  Google Scholar 

Papile LA, Burstein J, Burstein R, Koffler H. Incidence and evolution of subependymal and intraventricular hemorrhage: a study of infants with birth weights less than 1,500 gm. J Pediatr. 1978;92:529–34.

Article  CAS  PubMed  Google Scholar 

Jobe AH, Bancalari E. Bronchopulmonary dysplasia. Am J Respir Crit Care Med. 2001;163:1723–9.

Article  CAS  PubMed  Google Scholar 

International Committee for the Classification of Retinopathy of Prematurity. An international classification of retinopathy of prematurity. Pediatrics. 1984;74:127–33.

Article  Google Scholar 

Bell MJ, Ternberg JL, Feigin RD, Keating JP, Marshall R, Barton L, et al. Neonatal necrotizing enterocolitis. Therapeutic decisions based upon clinical staging. Ann Surg. 1978;187:1–7.

Article  CAS  PubMed  PubMed Central  Google Scholar 

R Core Team. R: a language and environment for statistical computing. Vienna, Austria: R Foundation for Statistical Computing; 2024. https://www.R-project.org/.

Stoll BJ, Hansen NI, Bell EF, Shankaran S, Laptook AR, Walsh MC, et al. Trends in care practices, morbidity, and mortality of extremely preterm neonates, 1993–2012. JAMA. 2015;314:1039–51.

Article  CAS  PubMed  PubMed Central  Google Scholar 

Carlo WA, McDonald SA, Fanaroff AA, Vohr BR, Stoll BJ, Ehrenkranz RA, et al. Association of antenatal corticosteroids with mortality and neurodevelopmental outcomes among infants born at 22 to 25 weeks’ gestation. JAMA. 2011;306:2348–58.

Article  CAS  PubMed  PubMed Central  Google Scholar 

Profit J, Lee HC, Zupancic JAF, Gould JB, Petersen LA, Edwards EM, et al. Clinical benefits, costs, and cost-effectiveness of quality improvement in neonatal intensive care. Pediatrics. 2010;125:e933–e939.

Google Scholar 

Shah PS, Lee SK, Profit J, Yamada J, Ohlsson A, Sauve R, et al. Quality improvement in neonatal resuscitation: evidence-based strategies and challenges. Pedriatics. 2013;131:e765–e774.

Google Scholar