Evidence map›Paper›PMID 33488278›Full record

ArticleReproductive medicine and biology2021

Assisted reproductive technology in Japan: A summary report for 2018 by the Ethics Committee of the Japan Society of Obstetrics and Gynecology.

Osamu Ishihara, Seung Chik Jwa, Akira Kuwahara, Yukiko Katagiri, Yoshimitsu Kuwabara, Toshio Hamatani, Miyuki Harada, Yutaka Osuga

Abstract read
In one paragraph

Article in Reproductive medicine and biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 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

27 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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.

Osamu IshiharaDepartment of Obstetrics and Gynecology Saitama Medical University Saitama Japan.
Seung Chik JwaDepartment of Obstetrics and Gynecology Saitama Medical University Saitama Japan.ORCID https://orcid.org/0000-0002-8815-5714
Akira KuwaharaDepartment of Obstetrics and Gynecology Graduate School of Biomedical Sciences Tokushima University Tokushima Japan.
Yukiko KatagiriDepartment of Obstetrics and Gynecology Faculty of Medicine Toho University Tokyo Japan.ORCID https://orcid.org/0000-0002-0052-896X
Yoshimitsu KuwabaraDepartment of Obstetrics and Gynecology Nippon Medical School Tokyo Japan.
Toshio HamataniDepartment of Obstetrics and Gynecology School of Medicine Keio University Tokyo Japan.
Miyuki HaradaDepartment of Obstetrics and Gynecology Faculty of Medicine The University of Tokyo Tokyo Japan.
Yutaka OsugaDepartment of Obstetrics and Gynecology Faculty of Medicine The University of Tokyo Tokyo Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeSince 2007, the Japan Society of Obstetrics and Gynecology (JSOG) has collected cycle-based data for assisted reproductive technology (ART) in an online registry. Here, we present the characteristics and treatment outcomes of ART cycles registered during 2018.

methodsThe Japanese ART registry consists of cycle-specific information for all ART treatment cycles implemented at 621 participating facilities. We conducted descriptive analyses for such cycles registered for 2018.

resultsIn total, 454 893 treatment cycles and 56 979 neonates were reported in 2018: both increased from 2017. The mean maternal age was 38.0 years (standard deviation ± 4.7). Of 247 402 oocyte retrievals, 118 378 (47.8%) involved freeze-all-embryos cycles; fresh embryo transfer (ET) was performed in 50 463 cycles: a decreasing trend since 2015. A total of 199 914 frozen-thawed ET cycles were reported, resulting in 69 357 pregnancies and 49 360 neonates born. Single ET (SET) was performed in 82.2% of fresh transfers and 83.4% of frozen-thawed cycles, with singleton pregnancy/live birth rates of 97.2%/97.2% and 97.0%/97.2%, respectively.

conclusionsTotal ART cycles and subsequent live births increased in 2018. SET was performed in over 80% of cases, and the mode of ET has shifted continuously from using fresh embryos to frozen-thawed ones compared with previous years.

Indexed as

ART registryfreeze‐all strategyintracytoplasmic sperm injectionin vitro fertilizationJapan Society of Obstetrics and Gynecology

Identifiers

PMID33488278
PMCPMC7812461

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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.