title: [Risk factors of small for the gestational age neonates in a hospital of Lima, Peru].
abstract: OBJECTIVE
  Identify risk factors for at-term small for gestational age newborns.
  
  
  METHODS
  Retrospective cohort study using data from the Maternal Perinatal Information System of the Maria Auxiliadora Hospital of Lima, from the period 2000-2010. Maternal age, parity, education level, marital status, pregestational body mass index, number of prenatal care visits, presence of conditions such as preeclampsia, eclampsia, urinary tract infection and gestational diabetes as risk factors in small for gestational age newborns were evaluated. The weight for gestational age was calculated based on Peruvian percentiles. Crude relative risk (RR) and adjusted (ARR) were calculated with confidence intervals of 95% using log-binomial generalized linear models.
  
  
  RESULTS
  64,670 pregnant women were included. The incidence for small for gestational age was 7.2%. Preeclampsia (ARR 2.0, 95% CI: 1.86 to 2.15), eclampsia (ARR 3.22, 95% CI: 2.38 to 4.35), low maternal weight (ARR 1.38; 95% CI: 1.23 to 1.54), nulliparity (ARR 1.32, 95% CI: 1.23 to 1.42), age ≥35 years (ARR 1.16, 95% CI: 1.04 -1.29), having prenatal care visits from 0 to 2 (ARR 1.43, 95% CI: 1.32 to 1.55) and 3 to 5 (ARR 1.22, 95% CI: 1.14 to 1.32) were risk factors for small for gestational age.
  
  
  CONCLUSIONS
  It is necessary to identify pregnant women with risk factors such as those found to decrease the condition of small for gestational age. Actions should emphasize modifiable factors, such as the frequency of prenatal care visits.
authors.affiliation: Escuela de Medicina, Universidad Peruana de Ciencias Aplicadas, Lima, Perú
authors.forename: J Eduardo
authors.initials: JE
authors.lastname: Tejeda-Mariaca
authors.affiliation: Escuela de Medicina, Universidad Peruana de Ciencias Aplicadas, Lima, Perú
authors.forename: Orion
authors.initials: O
authors.lastname: Pizango-Mallqui
authors.affiliation: Escuela de Medicina, Universidad Peruana de Ciencias Aplicadas, Lima, Perú
authors.forename: Miguel
authors.initials: M
authors.lastname: Alburquerque-Duglio
authors.affiliation: Escuela de Medicina, Universidad Peruana de Ciencias Aplicadas, Lima, Perú
authors.forename: Percy
authors.initials: P
authors.lastname: Mayta-Tristán
mesh_terms: D016640:Diabetes, Gestational; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007236:Infant, Small for Gestational Age; D010568:Peru; D011247:Pregnancy; D011295:Prenatal Care; D012189:Retrospective Studies; D012307:Risk Factors