title: The association between maternal height and pregnancy outcomes in twin gestations.
abstract: OBJECTIVE
  We sought to assess the association between maternal height and the risk of preterm birth, fetal growth restriction and mode of delivery in twin gestations.
  
  
  METHODS
  Cohort study of patients with twin pregnancies delivered from 2005 to 2014. We compared pregnancy outcomes between patients of short stature ≤159 cm to those of normal stature ≥160 cm. Patients with monoamniotic twins and major fetal anomalies were excluded. Pearson's correlation, Chi-square and Student's t-test were used as appropriate.
  
  
  RESULTS
  Six hundred and sixty-six patients were included, 159 (23.9%) of whom had short stature (mean height 155.8 ± 2.5 cm) and 507 (76.1%) of whom had normal stature (mean height 167.2 ± 5.5 cm). There were no differences in outcomes between the groups in regards to preterm birth, gestational age (GA) at delivery, birth weight of either twin, preeclampsia, gestational diabetes or cesarean section rate. Results were similar when the groups were stratified by parity. As a continuous variable, maternal height did not correlate with GA at delivery (p= 0.388), cesarean delivery (p = 0.522) nor the birth weight of the larger (p = 0.206) or smaller (p = 0.307) twin.
  
  
  CONCLUSIONS
  In twin pregnancies, maternal short stature is not associated with preterm birth, fetal growth restriction or cesarean section rate. This suggests that although anthropometric measurements have long been used to counsel patients in regards to outcomes, patients of short stature should be reassured that their height does not appear to lead to adverse twin pregnancy outcomes.
authors.affiliation: a Department of Obstetrics and Gynecology , Icahn School of Medicine at Mount Sinai , New York , NY , USA and.
authors.forename: Felipe
authors.initials: F
authors.lastname: Tudela
authors.affiliation: a Department of Obstetrics and Gynecology , Icahn School of Medicine at Mount Sinai , New York , NY , USA and.|b Maternal Fetal Medicine Associates, PLLC , New York , NY , USA.
authors.forename: Simi
authors.initials: S
authors.lastname: Gupta
authors.affiliation: a Department of Obstetrics and Gynecology , Icahn School of Medicine at Mount Sinai , New York , NY , USA and.|b Maternal Fetal Medicine Associates, PLLC , New York , NY , USA.
authors.forename: Andrei
authors.initials: A
authors.lastname: Rebarber
authors.affiliation: a Department of Obstetrics and Gynecology , Icahn School of Medicine at Mount Sinai , New York , NY , USA and.|b Maternal Fetal Medicine Associates, PLLC , New York , NY , USA.
authors.forename: Daniel H
authors.initials: DH
authors.lastname: Saltzman
authors.affiliation: a Department of Obstetrics and Gynecology , Icahn School of Medicine at Mount Sinai , New York , NY , USA and.|b Maternal Fetal Medicine Associates, PLLC , New York , NY , USA.
authors.forename: Chad K
authors.initials: CK
authors.lastname: Klauser
authors.affiliation: a Department of Obstetrics and Gynecology , Icahn School of Medicine at Mount Sinai , New York , NY , USA and.|b Maternal Fetal Medicine Associates, PLLC , New York , NY , USA.
authors.forename: Nathan S
authors.initials: NS
authors.lastname: Fox
mesh_terms: D000328:Adult; D000886:Anthropometry / Q000379:methods; D001724:Birth Weight; D001827:Body Height; D016009:Chi-Square Distribution; D015331:Cohort Studies; D036861:Delivery, Obstetric / Q000379:methods; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011248:Pregnancy Complications / Q000209:etiology*; D011256:Pregnancy Outcome; D059285:Pregnancy, Twin; D047928:Premature Birth; D014427:Twins / Q000706:statistics & numerical data
keywords: Anthropometric; cesarean section; fetal growth restriction; pregnancy; preterm birth; twins