Evidence map›Paper›PMID 27577996›Full record

SynthesisReproductive biology and endocrinology : RB&E2016

Which one has a better obstetric and perinatal outcome in singleton pregnancy, IVF/ICSI or FET?: a systematic review and meta-analysis.

J Zhao, B Xu, Q Zhang, Y P Li

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Reproductive biology and endocrinology : RB&E, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 2 pooled it
12.4field-weighted citation impact, top 2% 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

19 citing papers in PubMed, 2 syntheses or guidelines pooled it, 64 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

4 authors at 2 institutions in 1 country.

J ZhaoDepartment of Reproductive Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha City, 410008, Hunan Province, People's Republic of China.
B XuDepartment of Reproductive Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha City, 410008, Hunan Province, People's Republic of China.
Q ZhangDepartment of Reproductive Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha City, 410008, Hunan Province, People's Republic of China.
Y P LiDepartment of Reproductive Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha City, 410008, Hunan Province, People's Republic of China. LYP7798@126.com.
Central South University · CNXiangya Hospital Central South University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe present study aims to compare which one has a better obstetric and perinatal outcome in singleton pregnancy, frozen embryo transfer (FET) or. in vitro fertilization treatment/intracytoplasmic sperm injection (IVF/ICSI)?

methodsMEDLINE, Google Scholar and the Cochrane Library were searched for the obstetric and perinatal outcomes in singleton pregnancy after assisted reproductive technology (ART) from inception until July 2016. Clinical trials, which compared obstetric/perinatal outcomes in singleton pregnancy after FET and IVF/ICSI-ET, were included. The primary outcome was low birth weight, preterm birth, perinatal mortality, still birth, and cesarean section.

resultsThirteen cohort studies with 126,911 women were included, of which 12, 11, 6, 6, 5 studies were used to analyze low birth weight, preterm birth, perinatal mortality, still birth, and cesarean section, respectively. IVF/ICSI is associated with a high risk of preterm birth (OR = 1.14, 95 % CI: 1.02, 1.28) and low birth rate (OR = 1.48, 95 % CI: 1.37, 1.60). There was no significant difference in the risk of the still birth (OR = 1.01, 95 % CI: 0.76, 1.35) and perinatal mortality (OR = 1.11, 95 % CI: 0.85, 1.46) between FET and IVF/ICSI. Singleton pregnancy after FET was associated with higher cesarean section rate compared with IVF/ICSI (OR = 0.85, 95 % CI: 0.80, 0.91).

conclusionsSingleton pregnancy after FET seems to have a better perinatal outcome compared with that after IVF/ICSI. Further randomized controlled trials which adjust for a variety of meaningful confounders are needed in order to draw sound conclusions.

Indexed as

Cesarean SectionCohort StudiesDelivery, ObstetricEmbryo TransferFemaleFertilization in VitroHumansInfant, Low Birth WeightInfant, NewbornPregnancyPregnancy OutcomePremature BirthSperm Injections, IntracytoplasmicFrozen embryo transfer (FET)Intracytoplasmic sperm injection (ICSI)In vitro fertilization (IVF)Obstetric outcomesPerinatal outcomes

Identifiers

PMID27577996
PMCPMC5006501
OpenAlexW2510325016

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.