Evidence map›Paper›PMID 23208764›Full record

ArticleAmerican journal of perinatology2013

Maternal dietary nutrient intake and risk of preterm delivery.

Suzan L Carmichael, Wei Yang, Gary M Shaw, National Birth Defects Prevention Study

Abstract readMulticenter Study
In one paragraph

Article in American journal of perinatology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 3 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

32 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  15. Maternal DNA Methylation During Pregnancy: a Review.Reproductive sciences (Thousand Oaks, Calif.) · 2021
    Review
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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

4 authors.

Suzan L CarmichaelDivision of Neonatology and Developmental Medicine, Stanford University School of Medicine, Stanford, California 94305, USA. scarmichael@stanford.edu
Wei Yang
Gary M Shaw
National Birth Defects Prevention Study

Funding

UNIV OF NORTH CAROLINA CLINICAL NUTRITION RESEARCH UNITP30DK056350 · NIDDK · UNIV OF NORTH CAROLINA CHAPEL HILL · PI Ian Michael Carroll · 1999 to 2026
$31.6M
NIDDK NIH HHS DK56350NIDDK NIH HHS P30 DK056350PHS HHS U50/CCU913241
6 · The paper itself

Abstract

objectiveTo examine maternal dietary intake and preterm delivery. STUDY

designData included 5738 deliveries from the National Birth Defects Prevention Study. Odds ratios (ORs) reflected risks of delivery at <32, 32-34, or 35-36 versus ≥ 37 weeks for maternal intake in the lowest or highest quartile of nutrient intake compared with the middle two.

resultsAmong deliveries < 32 weeks, many ORs were ≥ 1.5 or ≤ 0.7, but few confidence intervals excluded one. ORs were ≥ 1.5 for lowest quartiles of protein, thiamin, riboflavin, choline, vitamin A, α-carotene, β-carotene, vitamin E, iron, copper, and zinc and for highest quartiles of carbohydrate, glycemic index, and Mediterranean Diet Score. ORs were ≤ 0.7 for lowest quartiles of glycemic index and betaine and for highest quartiles of protein, alanine, methionine, vitamin B6, betaine, and calcium. Few ORs met these criteria for later preterm deliveries.

conclusionsResults suggested an association of nutrient intake with earlier preterm deliveries.

Indexed as

DietVitaminsAdultCase-Control StudiesConfidence IntervalsDietary ProteinsDiet SurveysFemaleHumansOdds RatioPregnancyPremature BirthRisk FactorsUnited StatesYoung AdultDietary ProteinsVitamins

Identifiers

PMID23208764
PMCPMC4041277

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

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.