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Comparison of the reliability of two hydronephrosis grading systems: The Society for Foetal Urology grading system vs. the Onen grading system

Authors
 S.-Y. Kim  ;  M.-J. Kim  ;  C.S. Yoon  ;  M.S. Lee  ;  K.H. Han  ;  M.-J. Lee 
Citation
 CLINICAL RADIOLOGY, Vol.68(9) : 484-490, 2013 
Journal Title
 CLINICAL RADIOLOGY 
ISSN
 0009-9260 
Issue Date
2013
MeSH
Adolescent ; Child ; Child, Preschool ; Dilatation, Pathologic/diagnostic imaging ; Dilatation, Pathologic/pathology ; Humans ; Hydronephrosis/diagnostic imaging* ; Hydronephrosis/pathology ; Infant ; Observer Variation ; Reproducibility of Results ; Retrospective Studies ; Ultrasonography
Keywords
Adolescent ; Child ; Child, Preschool ; Dilatation, Pathologic/diagnostic imaging ; Dilatation, Pathologic/pathology ; Humans ; Hydronephrosis/diagnostic imaging* ; Hydronephrosis/pathology ; Infant ; Observer Variation ; Reproducibility of Results ; Retrospective Studies ; Ultrasonography
Abstract
AIM: To compare the reliability of the conventional ultrasonography grading system for hydronephrosis as suggested by the Society for Fetal Urology (SFU) in 1993 and that developed by Onen in 2007. MATERIALS AND METHODS: One hundred and eighty kidneys in 90 paediatric patients were assessed by four radiologists using each of the two grading systems twice. The SFU system was graded 0-4 (0 = no hydronephrosis; 1 = visualized only renal pelvis; 2 = plus a few caliceal dilatation; 3 = all calyceal dilatation; 4 = plus parenchymal thinning). The Onen system was graded 0-4 (0 = no hydronephrosis; 1 = only renal pelvic dilatation; 2 = plus caliceal dilatation; 3 = plus <50% renal parenchymal loss; 4 = plus >50% renal parenchymal loss). Cohen's kappa statistic was used to estimate intra- and interobserver agreement. The weighted least-squares approach was used to compare the intra-observer agreement, and bootstrapping was used to compare the interobserver agreement between the two systems. RESULTS: Intra-observer agreement was substantial to almost perfect in both the SFU (κ 0.79-0.95) and the Onen (κ 0.66-0.97) grading system without difference. The overall interobserver agreement was substantial in both the SFU (κ 0.61-0.68) and the Onen (κ 0.66-0.76) grading system. However, interobserver agreement was fair to moderate for SFU grades 1 and 2 and Onen grades 2 and 3. CONCLUSION: Both the SFU and Onen grading system are reliable with good intra- and interobserver agreement. However, decreased interobserver agreement was demonstrated for SFU grades 1 and 2 and Onen grades 2 and 3.
Full Text
http://www.sciencedirect.com/science/article/pii/S0009926013001487
DOI
10.1016/j.crad.2013.03.023
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
Yonsei Authors
Kim, Myung Joon(김명준) ORCID logo https://orcid.org/0000-0002-4608-0275
Yoon, Choon Sik(윤춘식) ORCID logo https://orcid.org/0000-0003-2010-6710
Lee, Mu Sook(이무숙)
Lee, Mi-Jung(이미정) ORCID logo https://orcid.org/0000-0003-3244-9171
Han, Kyung Hwa(한경화)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/87622
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