title: [New percentile values for the anthropometric dimensions of twin neonates: analysis of perinatal survey data of 2007-2011 from all 16 states of Germany].
abstract: OBJECTIVE
  The aim of this study was to develop new national standards for birth weight, length, head circumference, and weight for length for newborn twins based on the German perinatal survey of 2007-2011. We also assessed trends in anthropometric measurements by comparing these new percentile values with the percentile values of 1990-1994.
  
  
  METHODS
  Perinatal survey data of 110,313 newborn twins from all the states of Germany collected in the years 2007-2011 were kindly provided by the AQUA Institute in Göttingen, Germany. Sex specific percentile values were calculated using cumulative frequencies. Percentile values at birth were computed for the 3rd, 10th, 25th, 50th, 75th, 90th, and 97th percentiles for 21-40 completed weeks of gestation. Percentile curves and tabulated values for the years 2007-2011 were compared with the published values of 1990-1994.
  
  
  CONCLUSIONS
  The new percentile curves (2007-2011) closely resemble the previous ones (1990-1994). Small differences can nonetheless be found. For example, for birth weight the new values for the 10th percentile are a little higher.
  
  
  CONCLUSIONS
  We recommend using the new percentile values instead of the old ones.
authors.affiliation: Institut für Perinatale Wachstumsforschung, Rostock/Sievershagen.
authors.forename: M
authors.initials: M
authors.lastname: Voigt
authors.affiliation: Department of Pediatrics, McMaster University, Hamilton, Canada.
authors.forename: N
authors.initials: N
authors.lastname: Rochow
authors.affiliation: Abteilung Perinatalmedizin, Frauenklinik der Technischen Universität -München, München.
authors.forename: K T M
authors.initials: KT
authors.lastname: Schneider
authors.affiliation: Abteilung Geburtshilfe, Agaplesion Klinikum Rotenburg, Rotenburg -(Wümme).
authors.forename: H-P
authors.initials: HP
authors.lastname: Hagenah
authors.affiliation: Division of Preventive Medicine, University of Alberta, Edmonton, Alberta, Canada.
authors.forename: S
authors.initials: S
authors.lastname: Straube
authors.affiliation: Arbeitsbereich Demografische Daten, Max-Planck-Institut für -Demografische Forschung, Rostock.
authors.forename: R
authors.initials: R
authors.lastname: Scholz
authors.affiliation: Deutsches Zentrum für Wachstum, Entwicklung und Gesundheitsförderung im Kindes- und Jugendalter, Berlin.
authors.forename: V
authors.initials: V
authors.lastname: Hesse
authors.affiliation: Klinik für Allgemeine Kinder- und Jugendmedizin, Funktionsbereich -Neonatologie/Intensivmedizin, Universitätsklinikum Freiburg, Freiburg.
authors.forename: R
authors.initials: R
authors.lastname: Hentschel
authors.affiliation: Abteilung Neonatologie und Neonatologische Intensivmedizin, Klinikum Südstadt, Rostock.
authors.forename: D
authors.initials: D
authors.lastname: Olbertz
mesh_terms: D000886:Anthropometry; D001724:Birth Weight / Q000502:physiology; D049628:Body Size / Q000502:physiology*; D005260:Female; D005858:Germany / Q000453:epidemiology; D019538:Health Care Surveys; D006801:Humans; D007231:Infant, Newborn / Q000502:physiology*; D008297:Male; D012016:Reference Values; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D017678:Sex Distribution; D014427:Twins / Q000706:statistics & numerical data*