Evidence map›Paper›PMID 22492388›Full record

ArticleBMJ open2012

The apparent breastfeeding paradox in very preterm infants: relationship between breast feeding, early weight gain and neurodevelopment based on results from two cohorts, EPIPAGE and LIFT.

Jean-Christophe Rozé, Dominique Darmaun, Clair-Yves Boquien, Cyril Flamant, Jean-Charles Picaud, Christophe Savagner, Olivier Claris, Alexandre Lapillonne, Delphine Mitanchez, Bernard Branger and 3 more

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In one paragraph

Article in BMJ open, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 83 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
83citing papers in PubMed, 5 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

83 citing papers in PubMed, 5 syntheses or guidelines pooled it.

  1. Pooled it
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  8. Article
  9. Article
  10. Perinatal Neuroprotection in Preterm Birth.Geburtshilfe und Frauenheilkunde · 2025
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  16. Observational
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  20. Fatty acid concentrations in preterm infants fed the exclusive human milk diet: a prospective cohort study.Journal of perinatology : official journal of the California Perinatal Association · 2024
    Article

23 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors.

Jean-Christophe RozéDepartment of Neonatal Medicine, Nantes University, CHU of Nantes, Nantes, France.
Dominique Darmaun
Clair-Yves Boquien
Cyril Flamant
Jean-Charles Picaud
Christophe Savagner
Olivier Claris
Alexandre Lapillonne
Delphine Mitanchez
Bernard Branger
Umberto Simeoni
Monique Kaminski
Pierre-Yves Ancel

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

contextSupplementation of breast milk is difficult once infants suckle the breast and is often discontinued at end of hospitalisation and after discharge. Thus, breastfed preterm infants are exposed to an increased risk of nutritional deficit with a possible consequence on neurodevelopmental outcome.

objectiveTo assess the relationship between breast feeding at time of discharge, weight gain during hospitalisation and neurodevelopmental outcome.

designObservational cohort study.

settingTwo large, independent population-based cohorts of very preterm infants: the Loire Infant Follow-up Team (LIFT) and the EPIPAGE cohorts. PATIENTS: 2925 very preterm infants alive at discharge.

main outcome measureSuboptimal neurodevelopmental outcome, defined as a score in the lower tercile, using Age and Stages Questionnaire at 2 years in LIFT and Kaufman Assessment Battery for Children Test at 5 years in EPIPAGE. Two propensity scores for breast feeding at discharge, one for each cohort, were used to reduce bias.

resultsBreast feeding at time of discharge concerned only 278/1733 (16%) infants in LIFT and 409/2163 (19%) infants in EPIPAGE cohort. Breast feeding is significantly associated with an increased risk of losing one weight Z-score during hospitalisation (LIFT: n=1463, adjusted odd ratio (aOR)=2.51 (95% CI 1.87 to 3.36); EPIPAGE: n=1417, aOR=1.55 (95% CI 1.14 to 2.12)) and with a decreased risk for a suboptimal neurodevelopmental assessment (LIFT: n=1463, aOR=0.63 (95% CI 0.45 to 0.87); EPIPAGE: n=1441, aOR=0.65 (95% CI 0.47 to 0.89) and an increased chance of having a head circumference Z-score higher than 0.5 at 2 years in LIFT cohort (n=1276, aOR=1.43 (95% CI 1.02 to 2.02)) and at 5 years in EPIPAGE cohort (n=1412, aOR=1.47 (95% CI 1.10 to 1.95)).

conclusionsThe observed better neurodevelopment in spite of suboptimal initial weight gain could be termed the 'apparent breastfeeding paradox' in very preterm infants. Regardless of the mechanisms involved, the current data provide encouragement for the use of breast feeding in preterm infants.

Identifiers

PMID22492388
PMCPMC3323805

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.