RT Journal Article T1 Comparación antropométrica del crecimiento fetal medio de los embarazos gemelares y únicos, por sexo y edad gestacional T2 Anthropometric comparison of the averaged fetal growth of pregnancies of twins against single pregnancies, according to sex and gestational duration time A1 Alonso Ortiz, T. A1 Armada Maresca, María Isabel A1 Alonso Chacón, Pablo A1 Zuluaga Arias, María del Pilar AB Objective: To compare fetal growth averaged rythm of single pregnancies with those of pregnancies of twins, according to sex and gestational duration time; and comparing twin male and female newborns. Material and method: Comparisons are taken from the averaged weekly growth of 1.056 male twins and 1.084 twin female newborns, against 19.982 single males and 18.636 single female newborns, respectively. These comparisons are also taken from the 1.056 male twins and the 1.084 female twins. Results: The significant differences between single newborns and twins according to weight averaged growth, seize and cranium perimeter start from the thirty-fourth gestational week. Once male and female twins are compared, significant differences appear in weight and in averaged seize since the thirty-fourth gestational week. However, when cranium perimeters are compared, significant differences don't exist. Conclusion: Each country must have their own fetal growth curves for clasifying newborns accurately. PB Grutesa SN 0211-3465 YR 2003 FD 2003-02 LK https://hdl.handle.net/20.500.14352/51441 UL https://hdl.handle.net/20.500.14352/51441 DS Docta Complutense RD 6 jul 2025