JCO: 脊柱肿瘤研究组针对脊柱不稳定性肿瘤评分的信度和效度分析

2011-07-03 MedSci MedSci原创

治疗肿瘤相关脊柱不稳标准化的指征因缺乏有效、可靠的分类系统而受到阻碍。一项旨在确定记住不稳定性肿瘤评分(Spinal Instability Neoplastic Score ,SINS)在观察者之间、观察者内部的信度及其预测效度的研究成果,在线发表于6月27日的《临床肿瘤学杂志》(J Clin Oncol.)上。 该研究由脊柱肿瘤研究协作组成员将30名脊柱肿瘤患者的临床和影像学资料分为稳定、可

治疗肿瘤相关脊柱不稳标准化的指征因缺乏有效、可靠的分类系统而受到阻碍。一项旨在确定记住不稳定性肿瘤评分(Spinal Instability Neoplastic Score ,SINS)在观察者之间、观察者内部的信度及其预测效度的研究成果,在线发表于6月27日的《临床肿瘤学杂志》(J Clin Oncol.)上。

该研究由脊柱肿瘤研究协作组成员将30名脊柱肿瘤患者的临床和影像学资料分为稳定、可能不稳定和不稳定三类。将每个病例中间的类别(一致意见)作为预测效度检测的金标准。两种情况至少间隔6周,各评估者使用SINS对每位患者进行评分。将每位患者的总分转换成三个类别的数据段:0-6分为稳定,7-12分为可能不稳定、13-18分为不稳定。

研究结果显示关于肿瘤部位、疼痛、骨质、成线排列、椎体塌陷和脊柱后外侧受累情况的观察者间信度κ统计值分别为0.790、0.841、0.244、0.456、 0.462和0.492。以上各项观察者内部信度κ统计值分别为0.806、0.859、0.528、0.614、0.590和 0.662。观察者间和观察者内部总SINS评分信度的内部等级相关系数分别为0.846(95% CI 0.773-0.911) 和0.886(95% CI 0.868 - 0.902)。预测效度的κ统计值为0.712(95% CI 0.676 - 0.766)。由此得出结论,在确定3个临床相关的稳定性分类上,SINS显现出近乎完美的观察者间和观察者内部信度。SINS对可能不稳定和不稳定病变的敏感性和特异性分别为95.7% 和 79.5%。
 

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    2012-01-22 lidong40