Evidence map›Paper›PMID 26547202›Full record

ArticleJournal of assisted reproduction and genetics2016

Independent factors influencing large-for-gestation birth weight in singletons born after in vitro fertilization.

Sara Korosec, Helena Ban Frangez, Lili Steblovnik, Ivan Verdenik, Eda Vrtacnik Bokal

Open access · bronzeAbstract read
In one paragraph

Article in Journal of assisted reproduction and genetics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
5.2field-weighted citation impact, top 5% of its field
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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 32 citations in OpenAlex.

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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

5 authors at 1 institution in 1 country.

Sara KorosecDepartment of Human Reproduction, Division of Gynaecology, University Medical Centre Ljubljana, Šlajmerjeva 3, 1000, Ljubljana, Slovenia. sara_korosec@hotmail.com.
Helena Ban FrangezDepartment of Human Reproduction, Division of Gynaecology, University Medical Centre Ljubljana, Šlajmerjeva 3, 1000, Ljubljana, Slovenia.
Lili SteblovnikDepartment Perinatology, Division of Gynaecology, University Medical Centre Ljubljana, Šlajmerjeva 3, 1000, Ljubljana, Slovenia.
Ivan VerdenikResearch Unit, Division of Gynaecology, University Medical Centre Ljubljana, Šlajmerjeva 3, 1000, Ljubljana, Slovenia.
Eda Vrtacnik BokalDepartment of Human Reproduction, Division of Gynaecology, University Medical Centre Ljubljana, Šlajmerjeva 3, 1000, Ljubljana, Slovenia.
Ljubljana University Medical Centre · SI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeHigher risk for birth of singletons being large for gestational age (LGA) has been revealed after in vitro fertilization (IVF) frozen-thawed embryo-transfer (FET). This phenomenon is now being investigated, since there is a speculation that these neonates could suffer from underlying epigenetic disturbances. The aim of the study was to expose independent LGA risk factors and to identify those connected to the IVF techniques.

methodsAltogether, 4508 singleton pregnancies and births were included in the cohort case-matched study. Two hundred eleven singleton pregnancies and births after FET and 916 after fresh embryo transfer (ET) were included into two study groups. The IVF procedures were performed at the University Medical Centre Ljubljana between 2004 and 2011. For each IVF pregnancy, three matched consecutive controls after natural conception were included. Using logistic regression models, we observed LGA connection to maternal parameters (smoking, hypertension, parity, BMI, gestational diabetes, IVF conception, FET, double ET, and ICSI procedure).

resultsSingletons born after FET had a significantly higher risk for being LGA (p = 0.032; OR 1.697; 95 % CI 1.047-2.752). BMI 25-30 was a significant independent risk factor for LGA in the IVF groups (FET p = 0.041, OR 2.460, 95 % CI 1.030-5.857 and fresh ET p = 0.003; OR 2.188, 95 % CI 1.297-3.691). ICSI and double ET had no significant effect on LGA occurrence.

conclusionsBesides maternal BMI, FET is a significant independent LGA risk factor in IVF patients. Other observed factors (smoking, hypertension, multiparity, GDM, ICSI procedure, or number of embryos transferred) do not influence LGA risk significantly.

Indexed as

Birth WeightFertilization in VitroGestational AgeAdultBody Mass IndexCohort StudiesCryopreservationEmbryo TransferFemaleHumansInfant, NewbornPregnancyPregnancy OutcomeRisk FactorsBirth weightFrozen–thawed embryo transferIVF outcomeIVF singletonsLarge for gestation

Identifiers

PMID26547202
PMCPMC4717143
OpenAlexW2167475286

What OpenQuestion holds

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Registered trials

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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.