The reliability and validity of the Vancouver classification of femoral fractures after hip replacement
The reliability and validity of the Vancouver classification of femoral fractures after hip replacement
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DOI：
10.1016/s0883-5403(00)91181-1
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发表时间：
2000-01-01
影响因子：
3.5
通讯作者：
Duncan, CP
中科院分区：
文献类型：
--
作者：
Brady, OH;Garbuz, DS;Duncan, CP
本研究评估了髋关节置换术后股骨骨折新分类系统的可靠性和有效性。 40 张射线照片由 6 名观察员、3 名专家和 3 名非专家进行评估。每位观察者在 2 个不同的场合读取射线照片，并将每个病例按类型（A、B、C）和亚型（B1、B2、B3）进行分类。通过使用 kappa 统计量查看观察者内部和观察者间的一致性来评估可靠性。通过观察放射学分类与术中发现之间的一致性来评估 B 组内的有效性。我们的研究结果表明该分类系统是可靠且有效的。观察者之间的观察者内一致性是一致的，范围为 0.73 到 0.83。专家和非专家之间的差异可以忽略不计。通过 kappa 分析，观察者间的一读一致性为 0.61，二读为 0.64，表明观察者之间存在实质性一致性。有效性分析显示观察到的一致性 kappa 值为 0.78，表明基本一致。本研究表明该分类是可靠、有效的。
This study assessed the reliability and validity of a new classification system for fractures of the femur after hip arthroplasty. Forty radiographs were evaluated by 6 observers, 3 experts and 3 nonexperts. Each observer read the radiographs on 2 separate occasions and classified each case as to its type (A, B, C) and subtype (B1, B2, B3). Reliability was assessed by looking at the intraobserver and interobserver agreement using the kappa statistic. Validity was assessed within the B group by looking at the agreement between the radiographic classification and the intraoperative findings. Our findings suggest that this classification system is reliable and valid. Intraobserver agreement was consistent across observers, ranging from 0.73 to 0.83. There was a negligible difference between experts and nonexperts. Interobserver agreement was 0.61 for the first reading and 0.64 for the second reading by kappa analysis, indicating substantial agreement between observers. Validity analysis revealed an observed agreement kappa value of 0.78, indicating substantial agreement. This study has shown that this classification is reliable and valid.