title: [Factors related to birth weight: a comparison of related factors between newborns of Spanish and Colombian immigrant women in Spain].
abstract: The objective of this study is to establish differentials in birth weight (BW) and related factors, in term newborns (NB) of Spanish (SP) and Colombian (CO) immigrant mothers living in Spain, between 2001-2005. Data on the NB population of SP and CO mothers was retrieved from the National Statistical Bulletin of Birth in Spain. We analysed the association with BW (Low birth weight -LBW- insufficient weight -IW- macrosomia), by the nationality of the mother; taking into account variables such as the intergenesic interval, maternal age, number of live children, maternal occupation and sex of NB. The analysis was based on frequencies and the estimation of simple and adjusted odds ratios (OR) by means of logistic regression with 95% confidence intervals (95% CI). A higher prevalence of LBW was found in SP mothers (3.4%) than in their CO counterparts (2.1%). In SP mothers a higher risk of LBW (aOR 1.89, 950% CI 1.65- 2.16) and IW (aOR 1.49, 95% CI 1.51- 1.57) was observed. In CO mothers a higher percentage of macrosomia was found (8.0%). Also, a higher percentage of LBW was observed in female new borns (SP4.1%; CO 2.7%) as well as IW (PI (SP 25.6%; CO 19.6%) (p < 0.001). Mothers aged > 40 years and having 4 or more children were associated with LBW in both nationalities. As a conclusion, NB of Colombian mothers presented a lower prevalence of LBW and IW, which could be explained by the healthy migrant effect.
authors.affiliation: Escuela de Nutrición y Dietética, Universidad de Antioquia-Colombia, Area de Medicina Preventiva y Salud Pública, Universidad de Alicante-España.
authors.forename: Sandra Lucía
authors.initials: SL
authors.lastname: Restrepo-Mesa
authors.forename: Alejandro
authors.initials: A
authors.lastname: Estrada-Restrepo
authors.forename: Laura Inés
authors.initials: LI
authors.lastname: González-Zapata
authors.forename: Andrés A
authors.initials: AA
authors.lastname: Agudelo-Suarez
authors.forename: Elena
authors.initials: E
authors.lastname: Ronda-Pérez
mesh_terms: D000293:Adolescent; D000328:Adult; D001724:Birth Weight; D003105:Colombia / Q000208:ethnology; D054242:Emigrants and Immigrants / Q000706:statistics & numerical data*; D005260:Female; D005320:Fetal Macrosomia / Q000208:ethnology; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D015995:Prevalence; D012189:Retrospective Studies; D012307:Risk Factors; D012959:Socioeconomic Factors; D013030:Spain / Q000453:epidemiology; D055815:Young Adult