The aim of the study was to investigate whether survival in a …

• Abstract
• Methods
• Results
• Discussion
• Conclusion
• Abbreviations
• References
• Figure
• Tables

1.   Hack M, Fanaroff AA: Outcomes of children of extremely low birthweight and gestational age in the 1990s.Semin Neonatol 2000, 5:89-106.       2.   Lorenz JM, Paneth N, Jetton JR, den Ouden L, Tyson JE: Comparison of management strategies for extreme prematurity in New Jersey and the Netherlands: outcomes and resource expenditure.Pediatrics 2001, 108:1269-1274.       3.   Wilson-Costello D, Friedman H, Minich N, Fanaroff AA, Hack M: Improved survival rates with increased neurodevelopmental disability for extremely low birth weight infants in the 1990s.Pediatrics 2005, 115:997-1003.       4.   Hack M, Friedman H, Fanaroff AA: Outcomes of extremely low birth weight infants.Pediatrics 1996, 98:931-937.       5.   Lefebvre F, Glorieux J, Laurent-Gagnon T: Neonatal survival and disability rate at age 18 months for infants born between 23 and 28 weeks of gestation.Am J Obstet Gynecol 1996, 174:833-838.       6.   O'Shea TM, Klinepeter KL, Goldstein DJ, Jackson BW, Dillard RG: Survival and developmental disability in infants with birth weights of 501 to 800 grams, born between 1979 and 1994.Pediatrics 1997, 100:982-986.       7.   Jacobs SE, O'Brien K, Inwood S, Kelly EN, Whyte HE: Outcome of infants 23-26 weeks' gestation pre and post surfactant.Acta Paediatr 2000, 89:959-965.       8.   The Victorian Infant Collaborative Study Group: Improved outcome into the 1990's for infants weighing 50-999 g at birth.Archives of Disease in Childhood 1997, F91-F94.         9.   Harper RG, Rehman KU, Sia C, Buckwald S, Spinazzola R, Schlessel J, Mestrandrea J, Rodgers M, Wapnir RA: Neonatal outcome of infants born at 500 to 800 grams from 1990 through 1998 in a tertiary care center.J Perinatol 2002, 22:555-562.       10.   Hoekstra RE, Ferrara TB, Couser RJ, Payne NR, Connett JE: Survival and long-term neurodevelopmental outcome of extremely premature infants born at 23-26 weeks' gestational age at a tertiary center.Pediatrics 2004, 113:e1-e6.       11.   Goldstein DJ, EE F, JL W, TM OS: Comparison of the Bayley scales of infant development 2nd ed.Bayley scales of infant development with premature infants.J Psychoed Assess 1995, 13:391-396.       12.   Ballard JL, Khoury JC, Wedig K, Wang L, Eilers-Walsman BL, Lipp R: New Ballard Score, expanded to include extremely premature infants.J Pediatr 1991, 119:417-423.       13.   Kramer MS, Platt RW, Wen SW, Joseph KS, Allen A, Abrahamowicz M, Blondel B, Breart G: A new and improved population-based Canadian reference for birth weight for gestational age.Pediatrics 2001, 108:E35.         14.   Shennan AT, Dunn MS, Ohlsson A, Lennox K, Hoskins EM: Abnormal pulmonary outcomes in premature infants: prediction from oxygen requirement in the neonatal period.Pediatrics 1988, 82:527-532.       15.   Stewart AL, Reynolds EO, Hope PL, Hamilton PA, Baudin J, Costello AM, Bradford BC, Wyatt JS: Probability of neurodevelopmental disorders estimated from ultrasound appearance of brains of very preterm infants.Dev Med Child Neurol 1987, 29:3-11.       16.   Leviton A, Paneth N: White matter damage in preterm newborns--an epidemiologic perspective.Early Hum Dev 1990, 24:1-22.       17.   Bax MC: Terminology and classification of Cerebral Palsy.Dev Med Child Neurol 1964, 11:295-297.       18.   O'Shea TM, Klinepeter KL, Dillard RG: Prenatal events and the risk of cerebral palsy in very low birth weight infants.Am J Epidemiol 1998, 147:362-369.       19.   O'Shea TM, Nageswaran S, Hiatt DC, Legault C, Moore ML, Naughton M, Goldstein DJ, Dillard RG: Follow up for infants with chronic lung disease: a randomized comparison of community- and center-based models.Pediatrics 2007, in press.       20.   Adesanya OA, O'Shea TM, Turner CS, Amoroso RM, Morgan TM, Aschner JL: Intestinal perforation in very low birth weight infants: growth and neurodevelopment at 1 year of age.J Perinatol 2005, 25:583-589.       21.   Staehling, Sullivan KM: EXACTBIN: Exact Binomial Confidence Interval for Proportions.version1 01 Division of Nutrtion, CDC 1989.       22.   JL F: Statistical Methods for Rates and Proportions.. 2nd ed. edition. New York, NY, John Wiley and Sons; 1987.       23.   Schmidt B, Asztalos EV, Roberts RS, Robertson CM, Sauve RS, Whitfield MF: 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, 289:1124-1129.       24.   Doyle LW: Outcome at 5 years of age of children 23 to 27 weeks' gestation: refining the prognosis.Pediatrics 2001, 108:134-141.       25.   Wood NS, Marlow N, Costeloe K, Gibson AT, Wilkinson AR: Neurologic and developmental disability after extremely preterm birth. EPICure Study Group.N Engl J Med 2000, 343:378-384.       26.   Rijken M, Stoelhorst GM, Martens SE, van Zwieten PH, Brand R, Wit JM, Veen S: Mortality and neurologic, mental, and psychomotor development at 2 years in infants born less than 27 weeks' gestation: the Leiden follow-up project on prematurity.Pediatrics 2003, 112:351-358.       27.   Hintz SR, Kendrick DE, Vohr BR, Poole WK, Higgins RD: Changes in neurodevelopmental outcomes at 18 to 22 months' corrected age among infants of less than 25 weeks' gestational age born in 1993-1999.Pediatrics 2005, 115:1645-1651.       28.   Wilson-Costello D, Friedman H, Minich N, Siner B, Taylor G, Schluchter M, Hack M: Improved neurodevelopmental outcomes for extremely low birth weight infants in 2000-2002.Pediatrics 2007, 119:37-45.       29.   Nelson KB, Grether JK: Cerebral Palsy in Low Birthweight Infants: Etiology and Strategies for Prevention.Mental Retardation and Developmental Disabilities Research Reviews 1997, 3:112-117.       30.   O'Shea TM, Doyle LW: Perinatal glucocorticoid therapy and neurodevelopmental outcome: an epidemiologic perspective.Semin Neonatol 2001, 6:293-307.       31.   Effect of corticosteroids for fetal maturation on perinatal outcomes. NIH Consensus Development Panel on the Effect of Corticosteroids for Fetal Maturation on Perinatal OutcomesJAMA 1995, 273:413-418.       32.   Roth SC, Baudin J, Pezzani-Goldsmith M, Townsend J, Reynolds EO, Stewart AL: Relation between neurodevelopmental status of very preterm infants at one and eight years.Dev Med Child Neurol 1994, 36:1049-1062.       33.   Hack M, Taylor HG, Drotar D, Schluchter M, Cartar L, Wilson-Costello D, Klein N, Friedman H, Mercuri-Minich N, Morrow M: Poor predictive validity of the Bayley Scales of Infant Development for cognitive function of extremely low birth weight children at school age.Pediatrics 2005, 116:333-341.       34.   Aylward GP: Cognitive and neuropsychological outcomes: more than IQ scores.Ment Retard Dev Disabil Res Rev 2002, 8:234-240.       35.   MacDonald H: Perinatal care at the threshold of viability.Pediatrics 2002, 110:1024-1027.