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Inter-Observer Agreement in the Endoscopic Classification of Colorectal Laterally Spreading Tumors: A Multicenter Study Between Experts and Trainees

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Author(s)
Yoo Jin LeeEun Soo KimKyung Sik ParkKwang Bum ChoMi-Young LeeSung Kook KimSeong Woo JeonMin Kyu JungByung Ik JangKyeong Ok KimSi-Hyung LeeEun Young KimJoong Goo KwonJin Tae JungChang Heon YangWan Jung KimHyun Jin KimHyang Eun SeoDaegu-Gyeongbuk Gastrointestinal Study Group (DGSG)
Keimyung Author(s)
Lee, Yoo JinKim, Eun SooPark, Kyung SikCho, Kwang BumLee, Mi Young
Department
Dept. of Internal Medicine (내과학)
Dept. of Preventive Medicine (예방의학)
Journal Title
Digestive Diseases and Sciences
Issued Date
2014
Volume
59
Issue
10
Abstract
Background and Aim The risk of cancer varies with the
subtype of colorectal ‘‘laterally spreading tumors’’ (LSTs).
However, visual interpretations vary among endoscopists.
The aim of this study was to evaluate inter-observer
agreement and accuracy in the endoscopic classification of
LST subtypes among experts and trainees.
Methods In total, 40 LST images were collected and
reviewed independently by 14 gastroenterology experts
and 10 trainees. All investigators recorded their findings as
one of the following four categories: homogeneous, nodular
mixed, flat-elevated, and pseudo-depressed. Agreement
was assessed in terms of the kappa (j) statistic and
AC1 estimate. Accuracy is reported as percentage
agreement with the gold standard, based on the gross
morphology of the resected specimens.
Results Of the possible 91 pair-wise j estimates among
experts, 41 (45.1 %) were [0.75, indicating excellent
agreement, while only 2 (4.44 %) of the 45 pair-wise
j estimates among trainees were [0.75. Agreements for
individual LST subtypes in the trainee group were significantly
lower than those in the expert group. The j and
AC1 estimates showed similar values in individual subtypes
of LSTs. The overall accuracy of LST was also
significantly higher for the experts than the trainees (85.9
vs. 72.5 %, P\0.001). Notably, the flat-elevated subtype
showed the lowest agreement and accuracy and was frequently
misclassified as the pseudo-depressed subtype by
both groups.
Keimyung Author(s)(Kor)
이유진
김은수
박경식
조광범
이미영
Publisher
School of Medicine
Citation
Yoo Jin Lee et al. (2014). Inter-Observer Agreement in the Endoscopic Classification
of Colorectal Laterally Spreading Tumors: A Multicenter Study
Between Experts and Trainees. Digestive Diseases and Sciences, 59(10), 2550–2556. doi: 10.1007/s10620-014-3206-3
Type
Article
ISSN
0163-2116
Source
https://link.springer.com/article/10.1007%2Fs10620-014-3206-3
DOI
10.1007/s10620-014-3206-3
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/35594
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Internal Medicine (내과학)
1. School of Medicine (의과대학) > Dept. of Preventive Medicine (예방의학)
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