Evidence map›Paper›PMID 35813636›Full record

ArticleFrontiers in endocrinology2022

An Endometrial Thickness < 8 mm Was Associated With a Significantly Increased Risk of EP After Freeze-Thaw Transfer: An Analysis of 5,960 Pregnancy Cycles.

Ying Zhao, Dong'e Liu, Nenghui Liu, Yumei Li, Zhongyuan Yao, Fen Tian, Aizhuang Xu, Yanping Li

Abstract read
In one paragraph

Article in Frontiers in endocrinology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 2 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

11 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Impact of endometrial thickness on reproductive outcome in fresh and frozen-thawed embryo transfer: systematic review and meta-analysis.Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology · 2025
    Pooled it
  2. Pooled it
  3. Review
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  9. Therapeutic effect of menstrual blood stem cells in rats with thin endometrium.Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences · 2023
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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

8 authors.

Ying ZhaoDepartment of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha, China.
Dong'e LiuDepartment of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha, China.
Nenghui LiuDepartment of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha, China.
Yumei LiDepartment of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha, China.
Zhongyuan YaoDepartment of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha, China.
Fen TianDepartment of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha, China.
Aizhuang XuDepartment of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha, China.
Yanping LiDepartment of Reproductive Medicine, Xiangya Hospital, Central South University, Changsha, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Introduction: Endometrium characteristics that are most likely to induce ectopic pregnancy were investigated on the basis of the data of 5,960 pregnant freeze-thaw cycles. Methods: A total of 5,960 pregnancy cycles after freeze-thaw embryos transfer were included, with the number of intrauterine and ectopic pregnancies being 5,777 and 183, respectively. Ectopic pregnancy was the primary outcome. Endometrial thickness was the main measured variable. The risk factors of ectopic pregnancy were eventually determined based on univariate analysis and subsequent multiple-stepwise logistic regression analysis. Results: 1. After adjusting for confounders, endometrial thickness could independently predict ectopic pregnancy. The adjusted odd ratios for women with endometrial thickness in the ranges of < 8 mm, 8-9.9 mm, and 10-11.9 mm were 3.270 [95% confidence interval (CI), 1.113-9.605, Discussion: 1. After freeze-thaw embryo transfer, risks of ectopic pregnancy were significantly higher when the endometrial thickness was < 8 mm. 2. A thin endometrial thickness could be linked with abnormal endometrial peristaltic waves or abnormal endometrial receptivity. 3. Adequate attention should therefore be paid to patients with a thin endometrial thickness to prevent EP or to achieve early diagnosis during the peri-transplantation period.

Indexed as

Embryo TransferPregnancy, EctopicEndometriumFemaleHumansPregnancyRetrospective StudiesRisk Factorsblastocystcleavage stage embryoectopic pregnancyEMTendometrial typefreeze-thaw cycles

Identifiers

PMID35813636
PMCPMC9261458

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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.