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Interobserver and intraobserver agreement for gastric mucosa atrophy

Overview of attention for article published in BMC Gastroenterology, August 2015
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Title
Interobserver and intraobserver agreement for gastric mucosa atrophy
Published in
BMC Gastroenterology, August 2015
DOI 10.1186/s12876-015-0327-x
Pubmed ID
Authors

Tomohiro Miwata, Duc Trong Quach, Toru Hiyama, Rika Aoki, Huy Minh Le, Phuong Luu Ngoc Tran, Masanori Ito, Shinji Tanaka, Koji Arihiro, Naomi Uemura, Kazuaki Chayama

Abstract

The grade of gastric mucosa atrophy caused by Helicobacter pylori (H. pylori) infection is closely associated with the risk of gastric cancer, especially of the intestinal type. Interobserver and intraobserver agreement for endoscopic gastric mucosa atrophy in subjects with H. pylori-uninfected, currently infected and past infected was investigated. Endoscopic images of 91 patients, 34 images per patient, were assessed. The assessors were 4 endoscopist groups: Japanese and Vietnamese experienced (≥7, ≤ 15 year experience with endoscopy) and Japanese and Vietnamese beginner (≤ 3 year experience) groups. Each group comprised 3 endoscopists. The grades of atrophy were classified as 3: none to mild (C-0 and C-1), moderate (C-2 and C-3), and severe (O-1, O-2, and O-3) using the Kimura-Takemoto Classification. After a period of 2 weeks, images of all patients were reevaluated by the investigators. Interobserver and intraobserver agreement was calculated by kappa statistics. The kappa values for the interobserver agreement in the groups of Japanese and Vietnamese experienced, and Japanese and Vietnamese beginner were 0.474, 0.408, 0.291, and 0.373, respectively. The kappa value of intraobsever agreement in the Japanese and Vietnamese experienced endoscoists ranged from 0.585 to 0.871. On the other hand, the value in the beginner endoscopists ranged wider than that in experienced endoscopists, from 0.264 to 0.866. Our results indicated that, although intraobserver agreement for gastric mucosa atrophy was good to excellent, interobserver agreement was moderate in experienced endoscopists. This suggests that better guidelines and firm criteria may be needed to properly diagnose and grade gastric atrophy.

Twitter Demographics

The data shown below were collected from the profile of 1 tweeter who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 26 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 26 100%

Demographic breakdown

Readers by professional status Count As %
Student > Postgraduate 6 23%
Student > Ph. D. Student 3 12%
Other 2 8%
Student > Bachelor 2 8%
Professor > Associate Professor 2 8%
Other 6 23%
Unknown 5 19%
Readers by discipline Count As %
Medicine and Dentistry 14 54%
Immunology and Microbiology 2 8%
Psychology 1 4%
Agricultural and Biological Sciences 1 4%
Unknown 8 31%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 04 August 2015.
All research outputs
#3,830,233
of 5,441,762 outputs
Outputs from BMC Gastroenterology
#467
of 627 outputs
Outputs of similar age
#131,223
of 189,880 outputs
Outputs of similar age from BMC Gastroenterology
#43
of 45 outputs
Altmetric has tracked 5,441,762 research outputs across all sources so far. This one is in the 16th percentile – i.e., 16% of other outputs scored the same or lower than it.
So far Altmetric has tracked 627 research outputs from this source. They receive a mean Attention Score of 3.3. This one is in the 16th percentile – i.e., 16% of its peers scored the same or lower than it.
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We're also able to compare this research output to 45 others from the same source and published within six weeks on either side of this one. This one is in the 2nd percentile – i.e., 2% of its contemporaries scored the same or lower than it.