Evidence map›Paper›PMID 33008439›Full record

Observational studyBMC urology2020

Ambient sulfur dioxide could have an impact on testicular volume from a observational study on a population of infertile male.

Yu-An Chen, Yi-Kai Chang, Yann-Rong Su, Hong-Chiang Chang

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in BMC urology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
1.4field-weighted citation impact, top 18% 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

3 citing papers in PubMed, 13 citations in OpenAlex.

  1. Review
  2. Review
  3. Review
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.

Yu-An ChenDepartment of Urology, National Taiwan University Hospital and National Taiwan University College of Medicine, No.1, Changde St., Zhongzheng Dist, Taipei City, 10048, Taiwan.
Yi-Kai ChangDepartment of Urology, National Taiwan University Hospital and National Taiwan University College of Medicine, No.1, Changde St., Zhongzheng Dist, Taipei City, 10048, Taiwan.
Yann-Rong SuDepartment of Urology, National Taiwan University Hospital Hsin-Chu Branch, NO.25, Lane 442, Sec.1, Jingguo Rd, Hsinchu City, 300, Taiwan.
Hong-Chiang ChangDepartment of Urology, National Taiwan University Hospital and National Taiwan University College of Medicine, No.1, Changde St., Zhongzheng Dist, Taipei City, 10048, Taiwan. changhong@ntu.edu.tw.ORCID http://orcid.org/0000-0001-5411-6680
National Taiwan University Hospital · TWFu Jen Catholic University · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe effect of ambient pollutants on the male reproductive system is controversial. This retrospective study investigated the effect of environmental pollutants on male reproductive health.

methodsMale patients with primary infertility (n = 282) were identified from a single center between January 2016 and December 2017. Patients were physically examined for the presence of varicocele and for the volume of both testicles. Semen quality was measured in terms of the total sperm count, sperm concentration, and the percentage of sperm cells with motility and normal morphology. Data were acquired on the concentration of ambient pollutants, namely particulate matters of diameter < 2.5 μm, sulfur dioxide (SO

resultsThe mean ± standard deviation of age was 36.7 ± 7.3 years. The average sperm count and concentration were 41.9 million/mL and 34.1 million/mL, respectively. The mean levels of serum testosterone, follicle-stimulating hormone, and luteinizing hormone were 3.57 ± 1.68 ng/mL, 7.59 ± 6.3 IU/L, and 4.68 ± 3.49 IU/L, respectively. According to the multivariate linear regression model, NO

conclusionsNO

Indexed as

Infertility, MaleAdultAgedAir PollutantsHumansMaleMiddle AgedOrgan SizeRetrospective StudiesSemen AnalysisSulfur DioxideTestisYoung AdultAir PollutantsSulfur DioxideAir pollutionInfertilitySperm qualityTesticular volume

Identifiers

PMID33008439
PMCPMC7530959
OpenAlexW3089409262

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.