title: Prevalence of cleft lip and palate in births from 2003 - 2006 in Iran.
abstract: OBJECTIVE
  To determine the prevalence of cleft lip and palate in births taking place in hospitals in the Yazd province, Iran.
  
  
  METHODS
  The records of 65,236 live births delivered at 12 hospitals in Yazd province, including Yazd city and four cities of the states, over a four year period from 2003 to 2006 were examined.
  
  
  RESULTS
  Fifty six cases of cleft lip and palate were found, a prevalence of 0.86 per 1,000. Among the fifty six cases, there were seventeen cases (30.4%) of isolated cleft palate; thirteen cases (23.2%) of cleft lip and twenty six cases (46.4%) of cleft lip and palate. No statistically significant difference in the occurrence of cleft lip and palate were observed by the season of the birth, gender of newborn or maternal age. In regard to type of cleft, the prevalence of isolated cleft palate was higher in females than in males (p = 0.04). The prevalence of cleft lip was higher in summer than other seasons (p = 0.01).
  
  
  CONCLUSIONS
  The prevalence of cleft lip and palate among live births in Yazd is 0.86 per 1,000 births, that is 1 per 1,163 births.
authors.affiliation: Department of Orthodontics, Faculty of Dentistry, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran. syassaei@yahoo.com
authors.forename: S
authors.initials: S
authors.lastname: Yassaei
authors.forename: Z
authors.initials: Z
authors.lastname: Mehrgerdy
authors.forename: G
authors.initials: G
authors.lastname: Zareshahi
mesh_terms: D016009:Chi-Square Distribution; D002971:Cleft Lip / Q000453:epidemiology*; D002972:Cleft Palate / Q000453:epidemiology*; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D015994:Incidence; D007231:Infant, Newborn; D007492:Iran / Q000453:epidemiology; D008297:Male; D008423:Maternal Age; D015995:Prevalence; D012621:Seasons; D012737:Sex Factors