title: Risk factors for complete molar pregnancy: a study in Iran.
abstract: OBJECTIVE
  To evaluate some of the risk factors of complete molar pregnancy.
  
  
  METHODS
  A case-control study was performed on 91 cases of complete molar pregnancy (case group) and 295 cases of normal, term pregnancy with a live neonate (control group). Then the maternal age, parity and gravidity, blood group and Rh, history of molar pregnancy, consanguinity, history of spontaneous abortion, contraception method and nationality (Afghan or Iranian) were compared in the 2 groups.
  
  
  RESULTS
  History of molar pregnancy (OR [odds ratio], 95% CI 5.7 [1.2-25.61), spontaneous abortion (OR, 95% CI 2.1 [1.7-2.61), maternal age > 35 years old (OR, 95% CI 2.3 [1.3-3.9]) and < 20 years old (OR, 95% CI 1.6 [1.4-1.9]), consanguinity (OR, 95% CI 1.3 [1.1-1.51) and Iranian nationality (OR, 95% CI 1.9 [(1.5-2.4]) were found to be risk factors for molar pregnancy.
  
  
  CONCLUSIONS
  History of molar pregnancy and spontaneous abortion, maternal age > 35 and < 20, consanguinity and nationality may be risk factors for molar pregnancy.
authors.affiliation: Department of Obstetrics and Gynecology, Medical Education and Development Center, Iran University of Medical Science, Tehran, Iran. maryamkashanian@yahoo.com
authors.forename: Maryam
authors.initials: M
authors.lastname: Kashanian
authors.forename: Hamid Reza
authors.initials: HR
authors.lastname: Baradaran
authors.forename: Nasim
authors.initials: N
authors.lastname: Teimoori
mesh_terms: D000022:Abortion, Spontaneous / Q000453:epidemiology; D000328:Adult; D016022:Case-Control Studies; D003241:Consanguinity; D005006:Ethnicity; D005260:Female; D006801:Humans; D006828:Hydatidiform Mole / Q000453:epidemiology*; D007492:Iran; D008423:Maternal Age; D011247:Pregnancy; D012307:Risk Factors