Preterm delivery risk in migrants in Italy: an observational prospective study.
BACKGROUND
Various studies have ascertained different birth outcomes between resident and migrant populations in western countries. Considering preterm delivery (<37 complete weeks of gestation) as a perinatal risk condition, we assessed its rate in migrant and native Italian women who delivered in the main public hospital in Brescia (Italy).


METHODS
All migrant puerperas and a random sample of native puerperas hospitalized during the period February to May 2005 were included in the study after informed consent and filled in a self-administered multilanguage questionnaire enquiring about sociodemographic and obstetric data. Additional information including last menstrual period was obtained from personal obstetric records.


RESULTS
As many as 471 puerperas entered the study: 366 Italian and 105 migrant women coming from eastern Europe (41.9%), Asia (20%), South America (10.5%), and Africa (27.6%). Of the migrant population, 67 of 105 (63.8%) were at their first delivery in Italy (median interval from arrival: 3.8 y). Gestational age at delivery was assessed for 456 of 471 women (103 migrants and 353 Italians). A total of 36 (7.9%) preterm deliveries were registered: 22 (6.2%) in Italian and 14 (13.6%) in migrant puerperas (p value = 0.015). The highest preterm delivery rate was observed in African women (20.7%), while women from eastern Europe had a similar rate to Italians. In univariate analysis, factors associated to preterm delivery were parity and length of permanence in Italy. We could not demonstrate any correlation with smoking or with a delayed access to antenatal care (first obstetric evaluation after 12 complete weeks of gestation). In multivariate analysis, African origin was the only independent risk factor for preterm delivery [odds ratio (OR) = 3.54; p = 0.018].


CONCLUSIONS
In our setting, preterm delivery occurred more frequently in migrant women, particularly of African origin, and it is not associated to delayed access to antenatal care.
Sosta
Elena
E
Institute for Infectious and Tropical Diseases, University of Brescia, Brescia, Italy.
Tomasoni
Lina R
LR
Frusca
Tiziana
T
Triglia
Maria
M
Pirali
Francesco
F
El Hamad
Issa
I
Castelli
Francesco
F
D000328:Adult; D000349:Africa / Q000208:ethnology; D001208:Asia / Q000208:ethnology; D015331:Cohort Studies; D016001:Confidence Intervals; D004641:Emigration and Immigration / Q000706:statistics & numerical data*; D005060:Europe / Q000208:ethnology; D005260:Female; D006297:Health Services Accessibility / Q000706:statistics & numerical data*; D006801:Humans; D007558:Italy / Q000453:epidemiology; D008019:Life Style; D007752:Obstetric Labor, Premature / Q000453:epidemiology* / Q000208:ethnology; D016017:Odds Ratio; D011247:Pregnancy; D011256:Pregnancy Outcome / Q000453:epidemiology* / Q000208:ethnology; D011295:Prenatal Care / Q000706:statistics & numerical data; D011446:Prospective Studies; D012044:Regression Analysis; D012307:Risk Factors; D014195:Travel; D016387:Women's Health / Q000208:ethnology*