title: Vaginal hematoma during parturition: a population-based study.
abstract: BACKGROUND
  Vaginal hematoma is a rare but painful complication during and after childbirth, with little information in the literature regarding risk factors and management. Aim. To study the risk factors in a national population-based registry.
  
  
  METHODS
  All births in Sweden from 1987 to 2000 inclusive.
  
  
  METHODS
  Data were analyzed using the Mantel-Haenszel technique, with odds ratio (OR) and 95% confidence interval (CI), adjusting for maternal age, parity and birthweight.
  
  
  RESULTS
  Nulliparity was a strong risk factor (OR 3.63, 95% CI 3.25-4.08), as was maternal age over 29 years and a birthweight exceeding 4000 g. Irrespective of year of delivery the mother stayed an extra 1.3-1.7 days in hospital following this complication.
  
  
  CONCLUSIONS
  Risk factors for vaginal hematoma during delivery include primiparity and a maternal age > 29 years.
authors.affiliation: Department of Obstetrics and Gynecology, Helsingborg Hospital, Sweden.
authors.forename: Zeyad
authors.initials: Z
authors.lastname: Saleem
authors.forename: Håkan
authors.initials: H
authors.lastname: Rydhström
mesh_terms: D000293:Adolescent; D000328:Adult; D001724:Birth Weight; D005260:Female; D006406:Hematoma / Q000453:epidemiology* / Q000209:etiology; D006801:Humans; D008423:Maternal Age; D008875:Middle Aged; D007744:Obstetric Labor Complications / Q000453:epidemiology* / Q000209:etiology; D010298:Parity; D011159:Population Surveillance; D011247:Pregnancy; D012042:Registries; D012307:Risk Factors; D013548:Sweden / Q000453:epidemiology; D014623:Vaginal Diseases / Q000453:epidemiology* / Q000209:etiology