title: Length and weight of newborns in Croatia from 1985 to 2009.
abstract: BACKGROUND
  Constitutional characteristics of humans are changing. People are becoming taller and they weigh more. These changes influence birth weight and birth length as well.
  
  
  METHODS
  A study was conducted on 2414 mothers and their newborns from 1985 to 2009 in Zagreb, Croatia, to establish a secular change in the weight and length of infants and the factors that are most related to these changes.
  
  
  RESULTS
  Birth weight has increased significantly in the past 25 years, and it is higher in male newborns. Taller mothers, with higher weight and body mass index, deliver newborns with higher birth weight. Weight gain in pregnancy has positive impact on birth weight. Multiparas and older and more educated women deliver newborns with higher weight. Birth weight does not depend on father's education. The number of newborns with birth weight more than 4000 g is increasing, but not significantly. Birth length was not significantly higher. Birth length is higher in male newborns, in newborns with higher birth weight and newborns of older and more educated mothers.
  
  
  CONCLUSIONS
  Better life conditions and better health care improves population constitutional characteristics that have implications in higher birth weight and birth length. This could be an important change that influences delivery modalities.
authors.affiliation: Department of Gynecology and Obstetrics, University Hospital Center "Sestre milosrdnice", Vinogradska 29, 10000, Zagreb, Croatia.
authors.forename: Hrvojka Soljacic
authors.initials: HS
authors.lastname: Vranes
authors.affiliation: Department of Gynecology and Obstetrics, University Hospital Center "Sestre milosrdnice", Vinogradska 29, 10000, Zagreb, Croatia. ivkadj@yahoo.com.
authors.forename: Ivka
authors.initials: I
authors.lastname: Djakovic
mesh_terms: D000886:Anthropometry / Q000379:methods; D001724:Birth Weight / Q000502:physiology*; D001827:Body Height / Q000502:physiology*; D017523:Croatia / Q000453:epidemiology; D004522:Educational Status; D005260:Female; D006801:Humans; D007231:Infant, Newborn / Q000502:physiology*; D008297:Male; D009035:Mothers / Q000706:statistics & numerical data*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D017678:Sex Distribution; D012737:Sex Factors
keywords: Newborns length; Newborns weight; Secular changes