title: Country of birth and hospitalization for pelvic inflammatory disease, ectopic pregnancy, endometriosis, and infertility: a nationwide study of 2 million women in Sweden.
abstract: OBJECTIVE
  To examine the association between country of birth and hospitalization for pelvic inflammatory disease (PID), ectopic pregnancy (EP), endometriosis, and infertility.
  
  
  METHODS
  Follow-up study.
  
  
  METHODS
  Sweden.
  
  
  METHODS
  A total of 2,170,177 women living in Sweden at some point between 1990 and 2004, categorized into 10 different groups according to country of birth.
  
  
  METHODS
  None.
  
  
  METHODS
  Hospitalization for PID, EP, endometriosis, and infertility.
  
  
  RESULTS
  For PID and infertility, all groups of foreign-born women exhibited significantly increased risks compared with Swedish-born women. The highest risks of PID were found among women from southern Europe, Eritrea/Ethiopia/Somalia, and other African countries, whereas the highest risks of infertility were found among women from Middle Eastern countries, other Asian countries, and other African countries. Compared with PID and infertility, country of birth was less associated with endometriosis and EP, although some differences were found. All relative risks were adjusted for age, time period, and the women's socioeconomic status.
  
  
  CONCLUSIONS
  Even in a country like Sweden, which offers publicly financed treatment for infertility, differences based on country of birth exist. Although data on partners' income were not available to us, it is possible that other factors besides socioeconomic factors are present in the etiology of female health problems related to infertility.
authors: Center for Family and Community Medicine, Karolinska Institute, Huddinge, Sweden.
authors: Jan
authors: J
authors: Eggert
authors: Xinjun
authors: X
authors: Li
authors: Kristina
authors: K
authors: Sundquist
mesh_terms: D000328:Adult; D015897:Comorbidity; D004715:Endometriosis / Q000208:ethnology*; D005260:Female; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D015994:Incidence; D007247:Infertility, Female / Q000208:ethnology*; D000292:Pelvic Inflammatory Disease / Q000208:ethnology*; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000208:ethnology*; D012042:Registries; D018570:Risk Assessment / Q000379:methods*; D012307:Risk Factors; D013548:Sweden / Q000208:ethnology; D016387:Women's Health