Koot V C, Kesselaer S M, Clevers G J, de Hooge P, Weits T, van der Werken C
Department of Radiology Diakonessehuis, Ultrecht, The Netherlands.
J Bone Joint Surg Br. 1996 Sep;78(5):831-4.
We studied the reliability of the Singh classification of trabecular bone structure in the proximal femur as a measure of osteoporosis, using kappa statistics. Radiographs of fractures of the femoral neck or trochanteric region in 80 consecutive patients were assessed by six observers. The interobserver variation was large; only three of 72 radiographs were given the same classification by all six observers and the kappa values ranged from 0.15 to 0.54. the intraobserver variation showed substantial strength of agreement; kappa values ranged from 0.63 to 0.88. In 77 patients dual-energy X-ray absorptiometry was used to measure bone mineral density. The results were compared with those of the Singh classification: we found no correlation.
我们使用kappa统计方法，研究了股骨近端小梁骨结构的辛格分类作为骨质疏松症衡量指标的可靠性。连续80例患者的股骨颈或转子区骨折的X线片由6名观察者进行评估。观察者间的差异很大；72张X线片中只有3张被所有6名观察者给予相同的分类，kappa值范围为0.15至0.54。观察者内差异显示出相当程度的一致性；kappa值范围为0.63至0.88。77例患者使用双能X线吸收法测量骨密度。将结果与辛格分类的结果进行比较：我们未发现相关性。
