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Interobserver variation in the detection of osteopenia by radiography and comparison with dual X-ray absorptiometry of the lumbar spine by Michael Jergas; Martin Uffmann; Heike Escher; Claus C. Glüer; Katy C. Young; Stephan Grampp; Odo Köster; Harry K. Genant is a Medicine article available to read on EtoBox.
What is Interobserver variation in the detection of osteopenia by radiography and comparison with dual X-ray absorptiometry of the lumbar spine about?
In 100 patients (20 male, 80 female) radiographs of the lumbar spine were obtained in both planes, anteroposterior and lateral. Nine readers independently and without specific criteria or training assessed the radiographs for presence of osteopenia in the form of a binary decision. A posteroanterior dual x-ray absorptiometry (PA DXA) measurement of the lumbar spine was performed in all patients using the Hologic QDR 1000 bone densitometer. A bone mineral density (BMD) of 0.83 g/ cm 2 (T-score about 2 SD and 2.5 SD lower than BMD in normal young female and male subjects respectively) was used as a threshold for the diagnosis of osteopenia. Complete agreement amongst the 9 readers was achieved in 43 patients. In 26 more patients at least 8 readers agreed. K-coefficients for interobserver variation ranged from 0.458 to 0.691 for reader pairs. For agreement between the observer ratings and the DXA results, K-coefficients ranging between 0.347 and 0.555 were found. The vast majority of readers agreed in the diagnosis of osteopenia in cases where the BMD was less than 0.73 g/cm 2. Where the BMD was between 0.73 and 1.03 g/cm 2 a substantial disagreement was found between reader evaluatio
Who reads Interobserver variation in the detection of osteopenia by radiography and comparison with dual X-ray absorptiometry of the lumbar spine?
It is typically read by researchers, students, and practitioners in Medicine.
- Author
- Michael Jergas; Martin Uffmann; Heike Escher; Claus C. Glüer; Katy C. Young; Stephan Grampp; Odo Köster; Harry K. Genant
- Publisher
- Springer; Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0364-2348)
- Published
- 1994
- Language
- EN
- Field
- Medicine (Health Sciences)