Evidence map›Paper›PMID 25463970›Full record

SynthesisPloS one2014

Are Ureaplasma spp. a cause of nongonococcal urethritis? A systematic review and meta-analysis.

Nan Zhang, Rong Wang, Xue Li, Xu Liu, Zhaobing Tang, Yunde Liu

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
4.4field-weighted citation impact, top 6% 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

28 citing papers in PubMed, 1 synthesis or guideline pooled it, 87 citations in OpenAlex.

  1. Pooled it
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  7. Review
  8. IDCases · 2024
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  17. The Role ofClinical microbiology reviews · 2019
    Review
  18. Classification of non-gonococcal urethritis: a review.International urology and nephrology · 2019
    Review
  19. Article
  20. Article
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.

Nan ZhangDepartment of Clinical Laboratory, the First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.
Rong WangDivision of Clinical Microbiology, School of Laboratory Medicine, Tianjin Medical University, Tianjin, China.
Xue LiDivision of Clinical Microbiology, School of Laboratory Medicine, Tianjin Medical University, Tianjin, China.
Xu LiuDepartment of Clinical Laboratory, the First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.
Zhaobing TangDepartment of Urology, the First Affiliated Hospital, Chongqing Medical University, Chongqing, China.
Yunde LiuDivision of Clinical Microbiology, School of Laboratory Medicine, Tianjin Medical University, Tianjin, China.
Tianjin Medical University · CNFirst Teaching Hospital of Tianjin University of Traditional Chinese Medicine · CNFirst Affiliated Hospital of Chongqing Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNongonococcal urethritis (NGU) is the most common male reproductive tract syndrome. Ureaplasmas spp. including U. urealyticum and U. parvum, have been increasingly reported to be implicated in NGU. However, there are still many contradictions about their pathogenic role in NGU.

aimsThe goals of this study were to evaluate the association of Ureaplasmas spp. with NGU, and to compare the prevalence of Ureaplasmas spp. infection in China relative to the world average.

methodsA systematic review and meta-analysis was conducted following standard guidelines for meta-analysis. The quality of included studies was assessed by Newcastle-Ottawa scale.

resultsA total of seven studies involving 1,507 NGU patients and 1,223 controls were eligible for meta-analysis. There was no significant difference in the Ureaplasma spp. positive rate between the NGU and control groups. However, the U. urealyticum positive rate was significantly higher in NGU patients compared to controls; the U. parvum positive rate was significantly higher in controls compared to NGU patients. Furthermore, within the NGU patient group, the positive rate of U. urealyticum was significantly higher than that of U. parvum, whereas within the control group, the opposite trend was observed. Compared to the world average, a significantly higher positive rate of Ureaplasma spp. was observed in both the NGU and control groups in China.

conclusionsOur analysis supports that U. urealyticum, but not U. parvum, is an etiological agent in NGU. More detailed studies of these two species in China and the world could contribute to a better understanding of the epidemiology and pathogenesis, and facilitate the development of better strategies for treatment and prevention of NGU.

Indexed as

AdolescentAdultAgedCase-Control StudiesChinaHumansMiddle AgedNeisseria gonorrhoeaePrevalencePublication BiasUreaplasmaUreaplasma InfectionsUrethritisYoung Adult

Identifiers

PMID25463970
PMCPMC4252037
OpenAlexW1998155420

What OpenQuestion holds

Textmetadata
LicenceCC BY
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Registered trials

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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.