An Assessment of the Reliability of the Enneking and Weinstein-Boriani-Biagini Classifications for Staging of Primary Spinal Tumors by the Spine Oncology Study Group

• DOI: 10.1097/brs.0b013e3181971283
• Publication Date: 2009-02-10T08:16:37Z
• Authors: Patrick Chan; Stefano Boriani; Daryl R. Fourney; Roberto Biagini; Mark B. Dekutoski; Michael G. Fehlings; Timothy C. Ryken; Ziya L. Gokaslan; Frank D. Vrionis; James S. Harrop; Meic H. Schmidt; Luis R. Vialle; Peter C. Gerszten; Laurence D. Rhines; Stephen L. Ondra; Stuart R. Pratt; Charles G. Fisher
• Keywords: Grading (engineering); Surgical margin

In Brief Study Design. Reliability analysis based on expert panel case series review and grading per the Enneking Weinstein-Boriani-Biagini classification systems. Objective. To assess reliability of Summary Background Data. The (WBB) classifications were developed to stage facilitate treatment planning in patients with primary spine tumors. date, their interobserver intraobserver has not been assessed–a fundamental step facilitating broader clinical research use. Methods. Clinical information, imaging studies, biopsy results compiled from 15 selected spinal Eighteen surgeons independently estimated scored cases for grade, tumor metastasis categories, stage, Enneking-recommended surgical margin, WBB zones layers, WBB-recommended procedures, a second assessment performed after random resorting cases. Interobserver each category assessed by percent agreement or proportional overlap. Fleiss, Cohen, Mezzich κ statistics (κ) then applied, determined type variable analyzed. Results. 0.82, 0.22, 0.00, 0.57, 0.47, 0.31, 0.58, 0.54 fields respectively. 0.97, 0.53, 0.67, 0.63, 0.79, 0.79 same respective fields. According Landis Koch, ranges values 0.00 0.20, 0.21 0.40, 0.41 0.60, 0.61 0.80, >0.80 imply slight, fair, moderate, substantial, near-perfect agreement, Conclusion. Results indicate moderate substantial both terms staging guidance treatment, despite less than interpreting local extension sector. Before incorporating practice further work is required investigate validity classifications. systems evaluation management individuals tumors was assessed. Moderate noted Substantial systems,