title: [Risk factors for low birth weight in Brazzaville, Congo].
abstract: OBJECTIVE
  To determine prevalence of low birth weight (LBW) in Brazzaville (Congo) and to identify associated risk factors.
  
  
  METHODS
  A case-control study was performed over a 2-month period. A total of 488 infants with LBW were compiled consecutively from May to June 2005. These subjects were compared to 488 infants with normal birth weight (2500-4000 g).
  
  
  RESULTS
  LBW concerned 12.4% of births. The frequency of LBW was higher among teenagers and mothers aged at least 30 years, and among mothers of low socio-economic status. The other principal risk factors of LBW were: primiparity and high parity; previous abortion; body mass index of mother inferior to 18; existent of hypertensive arterial pression, ancient or gravidic. A best control of pregnancy (number of antenatal visits>3 or at least one ultrasound) was linked with a low frequency of LBW.
  
  
  CONCLUSIONS
  Prevalence of LBW in Brazzaville was higher than in developing countries. An appropriate implementation of the National Program of Health during pregnancy and improvement of living conditions could contribute to minimize this phenomenon.
authors.affiliation: Service de pédiatrie-nourrissons, CHU, BP 32, Brazzaville, Congo. J.mabiala.babela@caramail.com
authors.forename: J-R
authors.initials: JR
authors.lastname: Mabiala-Babela
authors.forename: V C
authors.initials: VC
authors.lastname: Matingou
authors.forename: P
authors.initials: P
authors.lastname: Senga
mesh_terms: D000293:Adolescent; D000328:Adult; D015992:Body Mass Index; D016022:Case-Control Studies; D003223:Congo / Q000453:epidemiology; D003906:Developing Countries; D005260:Female; D005317:Fetal Growth Retardation / Q000453:epidemiology* / Q000209:etiology*; D006801:Humans; D006973:Hypertension / Q000150:complications; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D008423:Maternal Age; D008429:Maternal Welfare; D010298:Parity; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology; D015995:Prevalence; D012307:Risk Factors; D012923:Social Class