Interobserver Reliability and Reproducibility of S.T.O.N.E. Nephrolithometry for Renal Calculi
| Autor: | Alberto Perez-Lansac, Mohammad Helmy, Philip Bucur, Zhamshid Okhunov, Jaime Landman, Surendra B. Kolla, Ashleigh Menhadji, Achim Lusch, Kathy Osann, Jane S. Cho |
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| Rok vydání: | 2013 |
| Předmět: |
Observer Variation
medicine.medical_specialty Reproducibility Scoring system Interobserver reliability business.industry Intraclass correlation Urology medicine.medical_treatment Reproducibility of Results Stone size Surgery Kidney Calculi Humans Medicine Tomography X-Ray Computed business Percutaneous nephrolithotomy Nuclear medicine Nephrostomy Percutaneous |
| Zdroj: | Journal of Endourology. 27:1303-1306 |
| ISSN: | 1557-900X 0892-7790 |
| DOI: | 10.1089/end.2013.0289 |
| Popis: | To assess the reliability of the S.T.O.N.E. (stone size [S], tract length [T], obstruction [O], number of involved calices [N], and essence or stone density [E]) nephrolithometry scoring system by testing its reproducibility between different observers.Preoperative images of 58 patients who underwent percutaneous nephrolithotomy (PCNL) were reviewed. Medical students, urology residents, one fellow, and a urology attending independently reviewed all images and scored the renal stones. Interobserver reliabilities of the total score for all categories and each component were evaluated by the intraclass correlation (ICC) and a κ coefficient.The interobserver reliability for the total score demonstrated high correlations for all components and total score (ICC=S, T, O, N, E and total 0.80, 0.97, 0.89, 0.84, 0.91, and 0.87, respectively). κ rates for individual components between two medical students were 0.36, 1, 0.31, 0.45, 0.33, and 0.30 for the S, T, O, N, E components and total score, respectively. κ values between the two urology residents were 0.71, 1, 0.92, 0.79, 0.93, and 0.67 for S, T, O, N, E components and total score, respectively. κ values between the urology fellow and an attending physician were 0.95, 1, 0.88, 0.94, 0.89, and 0.87 for S, T, O, N, E components and total score, respectively. P value for all the scoring components was0.05, indicating that the estimated κ was not a result of chance.The S.T.O.N.E. nephrolithometry has excellent interobserver reliability. Quantifying the S and N metrics was the most challenging and least reliable. Standardized protocols to measure these components should be considered to improve accuracy and reproducibility of the scoring system. |
| Databáze: | OpenAIRE |
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