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Observer Agreement of Spine Stenosis on Magnetic Resonance Imaging Analysis of Patients With Cervical Spine Myelopathy

Cook, Chad, PT, PhD, MBA ; Braga-Baiak, Andresa, MD ; Pietrobon, Ricardo, MD, PhD, MBA ; Shah, Anand, BS ; Neto, Arnolfo Carvalho, MD ; de Barros, Nestor, MD, PhD

Journal of manipulative and physiological therapeutics, 2008-05, Vol.31 (4), p.271-276 [Peer Reviewed Journal]

United States: Mosby, Inc

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Title:
Observer Agreement of Spine Stenosis on Magnetic Resonance Imaging Analysis of Patients With Cervical Spine Myelopathy
Author: Cook, Chad, PT, PhD, MBA ; Braga-Baiak, Andresa, MD ; Pietrobon, Ricardo, MD, PhD, MBA ; Shah, Anand, BS ; Neto, Arnolfo Carvalho, MD ; de Barros, Nestor, MD, PhD
Subjects: Aged ; Cervical Vertebrae ; Cervical Vertebrae - diagnostic imaging ; Cervical Vertebrae - pathology ; Female ; Humans ; Magnetic Resonance Imaging ; Magnetic Resonance Imaging - methods ; Male ; Middle Aged ; Myelopathy ; Observer Variation ; Physical Medicine and Rehabilitation ; Radiography ; Reproducibility of Results ; Severity of Illness Index ; Spinal Cord Compression - classification ; Spinal Cord Compression - diagnosis ; Spinal Cord Compression - diagnostic imaging ; Spinal Stenosis - classification ; Spinal Stenosis - diagnosis ; Spinal Stenosis - pathology
Is Part Of: Journal of manipulative and physiological therapeutics, 2008-05, Vol.31 (4), p.271-276
Notes: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Description: Abstract Objectives The purpose of this study was to measure the intraobserver and interobserver reliability of magnetic resonance detection of cervical spondylotic myelopathy with and without operational guidelines. Methods Seven radiologists examined images from 10 patients with cord signal abnormalities and clinical signs of myelopathy. Radiologist examined films twice, with and without operational guidelines designed to define stenotic changes, while blinded to the clinical findings of the patients. Analyses included a Fleiss κ assessment of intraobserver and interobserver reliability. Results Results demonstrated high percentage of agreement and strong intraobserver reliability and variable Fleiss κ values for interobserver assessment. Operational guidelines did not improve the intraobserver or interobserver agreement. Conclusion Although the percentage of agreement was high in some cases, the κ agreement was low—most likely a result of the base rate problem of a κ analysis. Sample bias toward severe degenerative changes resulted in highly prevalent selections and κ adjusted values. Nonetheless, the results do suggest that substantial intraobserver κ agreement and a wide range of interobserver κ agreement exists among trained radiologists during detection of stenotic changes associated with cervical spondylotic myelopathy.
Publisher: United States: Mosby, Inc
Language: English

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Observer Agreement of Spine Stenosis on Magnetic Resonance Imaging Analysis of Patients With Cervical Spine Myelopathy

Cook, Chad, PT, PhD, MBA ; Braga-Baiak, Andresa, MD ; Pietrobon, Ricardo, MD, PhD, MBA ; Shah, Anand, BS ; Neto, Arnolfo Carvalho, MD ; de Barros, Nestor, MD, PhD

United States: Mosby, Inc

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