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Conversion and reliability of two urological grading systems in infants: the Society for Fetal Urology and the urinary tract dilatation classifications system

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dc.contributor.authorHan, M-
dc.contributor.authorKim, HG-
dc.contributor.authorLee, JD-
dc.contributor.authorPark, SY-
dc.contributor.authorSur, YK-
dc.date.accessioned2018-07-27T00:51:41Z-
dc.date.available2018-07-27T00:51:41Z-
dc.date.issued2017-
dc.identifier.issn0301-0449-
dc.identifier.urihttp://repository.ajou.ac.kr/handle/201003/15513-
dc.description.abstractBACKGROUND: The urinary tract dilation (UTD) classification system was proposed in 2014.
OBJECTIVE: To evaluate the correspondence and reliability of two US grading systems for postnatal urinary tract dilatation in infants: the Society for Fetal Urology (SFU) and the UTD systems.
MATERIALS AND METHODS: We assessed 180 kidneys in infants younger than 1 year. Four radiologists assessed the kidneys twice using both the SFU system (grades 0 to 4) and the UTD system (grades normal, P1, P2, P3). The SFU system was re-categorized into SFU-A (grades 0, 1-2, 3, 4) and into SFU-B (grades 0-1, 2, 3, 4). The Cohen kappa statistic was used for estimating agreement of both UTD-SFU-A and UTD-SFU-B.
RESULTS: The Cohen kappa was significantly higher between UTD and SFU-B as compared to the UTD and SFU-A (0.75 vs. 0.50, P < 0.001). Intra-observer agreement was similar for the two grading systems (SFU 0.64-0.88 vs. UTD 0.48-0.92, P = 0.050-0.885). SFU grades 2 and 3 showed fair to moderate inter-observer agreement and corresponding UTD grades P1 and P2 showed moderate to substantial agreement. The overall inter-observer agreement was significantly higher for the UTD system than for the SFU system during the first assessment (95% confidence interval [CI]: right kidney, -0.069 to -0.062: left kidney, -0.048 to -0.043).
CONCLUSION: Correspondence between the systems was poor using a recommended re-categorization (SFU-A). An alternative re-categorization (SFU-B) was found to be more appropriate for establishing correspondence between the systems. Both systems were reliable, with good intra- and inter-observer agreement for the assessment of infant kidneys, but the UTD system had better inter-observer agreement.
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dc.language.isoen-
dc.subject.MESHDilatation, Pathologic-
dc.subject.MESHFemale-
dc.subject.MESHHumans-
dc.subject.MESHHydronephrosis-
dc.subject.MESHInfant-
dc.subject.MESHKidney-
dc.subject.MESHMale-
dc.subject.MESHReproducibility of Results-
dc.subject.MESHRetrospective Studies-
dc.titleConversion and reliability of two urological grading systems in infants: the Society for Fetal Urology and the urinary tract dilatation classifications system-
dc.typeArticle-
dc.identifier.pmid27725992-
dc.contributor.affiliatedAuthor한, 미란-
dc.contributor.affiliatedAuthor김, 현지-
dc.type.localJournal Papers-
dc.identifier.doi10.1007/s00247-016-3721-9-
dc.citation.titlePediatric radiology-
dc.citation.volume47-
dc.citation.number1-
dc.citation.date2017-
dc.citation.startPage65-
dc.citation.endPage73-
dc.identifier.bibliographicCitationPediatric radiology, 47(1). : 65-73, 2017-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.identifier.eissn1432-1998-
dc.relation.journalidJ003010449-
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Radiology
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