Evidence map›Paper›PMID 31815629›Full record

ArticleReproductive biology and endocrinology : RB&E2019

Semen quality pattern and age threshold: a retrospective cross-sectional study of 71,623 infertile men in China, between 2011 and 2017.

W N Li, M M Jia, Y Q Peng, R Ding, L Q Fan, G Liu

Open access · goldAbstract read
In one paragraph

Article in Reproductive biology and endocrinology : RB&E, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
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

22 citing papers in PubMed, 49 citations in OpenAlex.

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  16. Spatiotemporal trends in human semen quality.Nature reviews. Urology · 2022
    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

6 authors at 3 institutions in 1 country.

W N LiThe Institute of Reproduction and Stem Cell Engineering, Central South University, Luyun Road 8, Changsha, 410008, Hunan, China.
M M JiaNorthwest Women's and Children's Hospital, Houzaimen Street, Xincheng District, Xi'an, 710000, Shanxi Province, China.
Y Q PengReproductive and Genetic Hospital of CITIC-Xiangya, Xiangya Road 84, Kaifu District, Changsha, 410008, Hunan, China.
R DingThe Institute of Reproduction and Stem Cell Engineering, Central South University, Luyun Road 8, Changsha, 410008, Hunan, China.
L Q FanThe Institute of Reproduction and Stem Cell Engineering, Central South University, Luyun Road 8, Changsha, 410008, Hunan, China.
G LiuThe Institute of Reproduction and Stem Cell Engineering, Central South University, Luyun Road 8, Changsha, 410008, Hunan, China. liugang7378@sina.com.ORCID http://orcid.org/0000-0002-8448-9784
Central South University · CNNorthwest Women's and Children's Hospital · CNReproductive & Genetic Hospital CITIC-Xiangya · CN

Funding

Chinese Medical Association 17020410710
6 · The paper itself

Abstract

backgroundThe aim of this study was to provide information on the semen quality pattern of infertile men and age thresholds for semen parameters in China.

methodsThis was a retrospective cross-sectional study investigating 71,623 infertile men from the Reproductive and Genetic Hospital of CITIC Xiangya in Hunan, China, from 2011 to 2017. The Kruskal-Wallis test, Mann-Kendall test, linear regression model and joinpoint regression were used.

resultsAlthough erratic changes were observed in the median semen parameters (sperm concentration 40.1-52.1 × 10

conclusionsThere is no evidence of a deterioration in semen quality among infertile men in Hunan, China. Semen parameters decreased with increasing age, with turning points noted at different ages. Semen parameters are not absolute evidence for the assessment of male fertility potential. Therefore, we believe that, among semen parameters, the sperm concentration is the best predictor of fertility for ART, followed by motility. Decreased sperm motility may affect natural pregnancy, but it is not necessary for successful IVF.

Indexed as

AdultAge FactorsAsian PeopleChinaCross-Sectional StudiesFertilityHumansInfertility, MaleMaleMiddle AgedRetrospective StudiesSemenSemen AnalysisSpermatozoaSperm CountSperm MotilityAge thresholdInfertile menSemen parametersSemen quality

Identifiers

PMID31815629
PMCPMC6902580
OpenAlexW2995662434

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.