title: Risk factors for hypertensive disorders of pregnancy in southern Brazil.
abstract: OBJECTIVE
  The aim of the study was to identify the frequency of risk factors for hypertensive disorders in pregnancy in Southern Brazil.
  
  
  METHODS
  The study included 161 patients with hypertensive disorders and 169 control subjects matched by age and ethnicity. The frequency of the risk factors was compared by Fisher's exact test, chi-square and Student's t test. A multivariate logistic regression analysis assessed the independent role of clinical, social and demographic factors which were associated with occurrence of the hypertensive disease in pregnancy in the univariate analysis.
  
  
  RESULTS
  Patients enrolled in the study were predominantly Caucasian (73%) and the mean age was 29. In the multivariate analysis, the variables associated were: family history of preeclampsia (p = 0.001; OR = 3.88; 95% CI = 1.77-8.46), diabetes (p = 0.021; OR = 3.87; 95% CI = 1.22-12.27) and chronic hypertension (p = 0.002; OR = 7.05; 95% CI = 1.99-24.93).
  
  
  CONCLUSIONS
  The risk factors associated with hypertensive disorders in pregnancy appear to be similar to those reported in other countries. The knowledge of the risk factors could be helpful in a prenatal care.
authors.affiliation: Universidade Federal do Rio Grande do Sul, Av. Grécia 1100, Porto Alegre, RS, Brazil. 　carolabrao@yahoo.com.br
authors.forename: Caroline Abrão
authors.initials: CA
authors.lastname: Dalmáz
authors.forename: Kátia Gonçalves dos
authors.initials: KG
authors.lastname: Santos
authors.forename: Mariana Rodrigues
authors.initials: MR
authors.lastname: Botton
authors.forename: Israel
authors.initials: I
authors.lastname: Roisenberg
mesh_terms: D000293:Adolescent; D000328:Adult; D001938:Brazil / Q000453:epidemiology; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D046110:Hypertension, Pregnancy-Induced / Q000453:epidemiology* / Q000209:etiology; D008875:Middle Aged; D011247:Pregnancy; D011446:Prospective Studies; D012044:Regression Analysis; D012307:Risk Factors; D055815:Young Adult