title: Growth charts of fetal biometry: a longitudinal study.
abstract: OBJECTIVE
  The aim of this study was to construct reference charts for fetal biometry in Karachi, Pakistan.
  
  
  METHODS
  This was a prospective longitudinal study involving 1228 women with singleton pregnancies. Biparietal diameter, head circumference, abdominal circumference and femur length were measured repeatedly until delivery. Regression analysis and multilevel modeling was used to construct charts.
  
  
  RESULTS
  The mean age of the women in this study was 28.0 years with standard deviation of 4.6. For each gestational age percentiles were calculated and charts were then constructed.
  
  
  CONCLUSIONS
  Our reference percentiles for fetal biometry measurements are the first of their kind in Karachi, Pakistan. They will not only help us in the diagnosis and management of fetal growth restriction but will provide the basis to develop charts at the national level.
authors.affiliation: Department of Obstetrics and Gynecology, The Aga Khan University Hospital, Karachi, Pakistan. shama.munim@aku.edu
authors.forename: Shama
authors.initials: S
authors.lastname: Munim
authors.forename: Tim
authors.initials: T
authors.lastname: Morris
authors.forename: Nilofer
authors.initials: N
authors.lastname: Baber
authors.forename: Yasmeen
authors.initials: Y
authors.lastname: Ansari
authors.forename: Syed Iqbal
authors.initials: SI
authors.lastname: Azam
mesh_terms: D000328:Adult; D001699:Biometry / Q000379:methods*; D001837:Body Weights and Measures / Q000706:statistics & numerical data; D005006:Ethnicity / Q000706:statistics & numerical data; D005260:Female; D047109:Fetal Development / Q000502:physiology*; D005333:Fetus / Q000033:anatomy & histology*; D005865:Gestational Age; D057238:Growth Charts; D006801:Humans; D008137:Longitudinal Studies; D011247:Pregnancy; D016216:Ultrasonography, Prenatal / Q000379:methods / Q000706:statistics & numerical data; D055815:Young Adult