title: Low birth weight in a municipality in the southeast region of Brazil.
abstract: OBJECTIVE
  to identify the prevalence of low birth weight in the city of São Paulo.
  
  
  METHODS
  epidemiological cross-sectional study with data collected by means of the Brazilian Live Birth Information System related to births occurred in the city of São Paulo between 2007 and 2013. Maternal, gestational, childbirth, and neonatal variables were analyzed descriptively and by association.
  
  
  RESULTS
  9.65% (1,342,655) of live births were underweight (mean of 3234.55 grams in the term group and 2312.17 in the pre-term group) with a mean maternal age of 27.53 years old. The risk factors identified include maternal age, not having a partner, low maternal level of education, other race rather than white, pre-term pregnancy, multiple births, low number of prenatal check-ups, and cesarean delivery.
  
  
  CONCLUSIONS
  knowledge of this evidence favors planning the care provided by defining strategies to reduce it and consequently improve maternal and infant health care.
authors.affiliation: Unidade de Terapia Intensiva Neonatal, Hospital e Maternidade Santa Joana, São Paulo, SP, Brasil.
authors.forename: Carolina Queiroz de Souza
authors.initials: CQ
authors.lastname: Mendes
authors.affiliation: Escola Paulista de Enfermagem, Universidade Federal de São Paulo, São Paulo, SP, Brasil.
authors.forename: Bruna Cristina de Almeida
authors.initials: BC
authors.lastname: Cacella
authors.affiliation: Escola Paulista de Enfermagem, Universidade Federal de São Paulo, São Paulo, SP, Brasil.
authors.forename: Myriam Aparecida
authors.initials: MA
authors.lastname: Mandetta
authors.affiliation: Escola Paulista de Enfermagem, Universidade Federal de São Paulo, São Paulo, SP, Brasil.
authors.forename: Maria Magda Ferreira Gomes
authors.initials: MM
authors.lastname: Balieiro
mesh_terms: D000328:Adult; D001938:Brazil / Q000453:epidemiology; D003430:Cross-Sectional Studies; D036861:Delivery, Obstetric; D005260:Female; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D008423:Maternal Age; D011247:Pregnancy