Alonso Ortiz, T.Armada Maresca, María IsabelAlonso Chacón, PabloZuluaga Arias, Pilar2023-06-202023-06-202004-110001-6640https://hdl.handle.net/20.500.14352/51439Objective. To design intrauterine growth curves and charts for twins, according to sex and weeks of gestation, and examine the perinatal aspects of these pregnancies. Material and methods. A cross-sectional, descriptive approach was employed to analyze the anthropometric data at birth (weight, length and head circumference) of 1116 pairs of healthy twins born of event-free pregnancies at Hospital San Carlos in Madrid, Spain. Results. The growth curves and charts of a total of 1056 twin boys and 1084 twin girls are presented according to means and standard deviations (+2SD, +1SD, -2SD, -1SD). Conclusion. Each population group should have their own fetal growth curves to enable the classification of newborns as preterm, full-term or post-term and as large, normal and small in size with regard to the gestational age.journal articlehttp://search.proquest.com/openview/eaa5696081b8f0a51cf457d11bc1c7bb/1?pq-origsite=gscholarhttp://www.actapediatrica.com/metadata only access51-76Fetal growthNewbornPerinatal anthropometryTwins. EMTREE medical terms: articlebody heightbody weightfemalefetus growthgestational agegrowth curvehead circumferencehumanmalenewbornnormal humansex differencestandardtwin pregnancy.Estadística aplicadaBiología24 Ciencias de la Vida