Evidence map›Paper›PMID 30524476›Full record

ArticleGastroenterology research and practice2018

Effects of Appendectomy on the Onset and Course of Ulcerative Colitis in Chinese Patients.

Dafan Chen, Jing Ma, Shengzheng Luo, Lungen Lu, Xinjian Wan, Qiwen Ben

Open access · goldAbstract read
In one paragraph

Article in Gastroenterology research and practice, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.5field-weighted citation impact, top 26% 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

4 citing papers in PubMed, 9 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. 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 1 institution in 1 country.

Dafan ChenDepartment of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine (originally named "Shanghai First People's Hospital"), Shanghai, China.ORCID 0000-0002-1100-9698
Jing MaDepartment of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine (originally named "Shanghai First People's Hospital"), Shanghai, China.ORCID 0000-0002-3735-1758
Shengzheng LuoDepartment of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine (originally named "Shanghai First People's Hospital"), Shanghai, China.ORCID 0000-0002-7643-3860
Lungen LuDepartment of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine (originally named "Shanghai First People's Hospital"), Shanghai, China.ORCID 0000-0002-1533-4068
Xinjian WanDepartment of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine (originally named "Shanghai First People's Hospital"), Shanghai, China.ORCID 0000-0002-9955-5545
Qiwen BenDepartment of Gastroenterology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.ORCID 0000-0002-0344-5617
Shanghai Jiao Tong University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPrevious epidemiological studies have suggested that appendectomy may be a protective factor against the development of ulcerative colitis (UC). However, the results of these studies were inconsistent, with rare studies in Chinese populations.

aimThis study examined the associations between appendectomy performed before UC diagnosis and the occurrence and clinical course of UC in Chinese patients.

methodsA case control study was conducted to compare the rate of appendectomy between UC patients and controls matched for age and sex at two Chinese hospitals. Clinical course of UC was compared between UC patients who underwent appendectomies before UC diagnosis and who did not.

results402 UC patients and 402 controls were included. The percentage of appendectomy performed before UC diagnosis in UC patients did not differ significantly from controls (2.74% vs 3.98%,

conclusionWe did not find a significant negative association between appendectomy and the UC occurrence in Chinese patients. Appendectomy performed before UC diagnosis may reduce the extent of UC involvement.

Identifiers

PMID30524476
PMCPMC6247428
OpenAlexW2899564169

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.