title: [Analysis of delivery facilities and conditions in 1991 in mothers of infants with birth weights below 1500 grams and/or gestational age under 33 weeks].
abstract: OBJECTIVE
  To identify maternities (in terms of level of activity and linkage with pediatric services) where, in 1991, mothers gave birth to infants of gestational age less than 33 weeks and/or with birth weight under 1500 g. To analyse factors linked to the probability of choosing a particular maternity as place of delivery for this population and measure the impact of maternal transferts on the rates of deliveries. To estimate the number of neonate transferts which could be avoided with simple recommendations. To propose policies that would allow France to come closer to the results of other reference countries in term of management of obstetrical and neonate care.
  
  
  METHODS
  We extracted from a retrospective sample of 84,279 births (out of a total of 770,148), 717 infants meeting previously defined criteria and related to the population described above, using univariate and multivariate analysis and logistic regression.
  
  
  RESULTS
  The Odds-ratio for a delivery to take place in a maternity with a volume of more than 2000 deliveries a year, compared with those doing less than 300 deliveries, is 4, 12. Only 15.8% of those deliveries took place in maternities linked to a level 3 pediatric unit (i.e where an intensive care neonates unit was located in the same building). 39.5% of births took place in level 1 maternities where no required pediatric service existed. Logistic regression techniques showed that the choice of a maternity for mother referral was more linked to the number of deliveries than to its level of pediatric services. In the studied population, 46% of the difference between the observed number of births in high volume maternities (compared to the expected number) could be explained by a maternal referral. The analysis of deliveries showed that for 34% of mothers who gave birth to a baby in a level 1 or 2 maternity, there was a possibility of being referred easily in a level 3 maternity.
  
  
  CONCLUSIONS
  This study shows that the level of care of mothers at high risk of delivering a very premature and/or hypotrophic infant is far from international standards. Simple actions could double the number of births taking place in adapted maternities. We propose to both obstetricians and pediatrists, a common program to enhance the level of care.
authors.affiliation: AIM, CHU de Toulouse.
authors.forename: J J
authors.initials: JJ
authors.lastname: Chale
authors.forename: E
authors.initials: E
authors.lastname: Papiernik
authors.forename: B
authors.initials: B
authors.lastname: Colladon
authors.forename: H
authors.initials: H
authors.lastname: Cohen
authors.forename: G
authors.initials: G
authors.lastname: Levy
authors.forename: A
authors.initials: A
authors.lastname: Lacroix
authors.forename: B
authors.initials: B
authors.lastname: Maria
authors.forename: M
authors.initials: M
authors.lastname: Palot
authors.forename: M
authors.initials: M
authors.lastname: Naiditch
mesh_terms: D000704:Analysis of Variance; D003696:Delivery Rooms / Q000458:organization & administration*; D036861:Delivery, Obstetric / Q000379:methods / Q000706:statistics & numerical data; D005260:Female; D005602:France; D006302:Health Services Research; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D019102:Infant, Very Low Birth Weight; D015931:Intensive Care, Neonatal; D016015:Logistic Models; D008427:Maternal Health Services / Q000458:organization & administration*; D010360:Patient Transfer / Q000706:statistics & numerical data; D011247:Pregnancy; D012017:Referral and Consultation; D012189:Retrospective Studies