title: Preterm delivery and psycho-social determinants of health based on World Health Organization model in Iran: a narrative review.
abstract: BACKGROUND
  Preterm delivery is still the primary cause of mortality and morbidity in infants, which shows a problematic condition in the care of pregnant women all over the world. This review study describes prevalence and psycho - socio-demographic as well as obstetrical risk factors related to live preterm delivery (PTD) in the recent decade in Iran.
  
  
  METHODS
  A narrative review was performed in Persian and international databases including PubMed, SID, Google Scholar, Iran Medex, Magiran and Irandoc from 2001 to 2010 with following keywords: preterm delivery and pregnancy outcomes with (prevalence, socioeconomic condition, structural determinant, Intermediary determinants, Psychosocial factor, Behavioral factor and Maternal circumstance, Health system). All of article was reviewed then categorized based on WHO model.
  
  
  RESULTS
  Totally 52 article were reviewed and 35 articles were selected, of which 26 were cross-sectional or longitudinal, 9 were analytical (cohort or case-control). The prevalence rates of preterm delivery in different cities of Iran were reported between 5.6% in Quom to 39.4% in Kerman. The most common social factors in structural determinant were educational level of mother, and in intermediary determinants were Psychosocial factor (maternal anxiety and stress during pregnancy), Behavioral factor and Maternal circumstance (violation and trauma) and in Health system, lack of prenatal care.
  
  
  CONCLUSIONS
  The prevalence rate of preterm delivery is a matter of concern. Since many psycho-social factors may affect on the condition and its high rate in poor communities might reveals a causal relationship among biological and psychosocial factors, performing etiological investigations is recommended.
authors.affiliation: Social Determinants of Health Research Center , University of Social Welfare and Rehabilitation Sciences, Tehran , Iran. mhdolatian@gmail.com
authors.forename: Mahrokh
authors.initials: M
authors.lastname: Dolatian
authors.forename: Arash
authors.initials: A
authors.lastname: Mirabzadeh
authors.forename: Ameneh Setareh
authors.initials: AS
authors.lastname: Forouzan
authors.forename: Homeira
authors.initials: H
authors.lastname: Sajjadi
authors.forename: Hamid
authors.initials: H
authors.lastname: Alavi Majd
authors.forename: Farnoosh
authors.initials: F
authors.lastname: Moafi
mesh_terms: D016206:Databases, Bibliographic; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007492:Iran / Q000453:epidemiology; D011247:Pregnancy; D011256:Pregnancy Outcome / Q000453:epidemiology*; D047928:Premature Birth / Q000453:epidemiology* / Q000209:etiology; D011295:Prenatal Care / Q000592:standards / Q000706:statistics & numerical data*; D015995:Prevalence; D012307:Risk Factors; D012923:Social Class; D014944:World Health Organization