角膜地形图模式分类方案的观察者间和观察者内可靠性
Interobserver and intraobserver reliability of a classification scheme for corneal topographic patterns.
作者信息
Rasheed K, Rabinowitz Y S, Remba D, Remba M J
机构信息
Cornea-Genetic Eye Medical Clinic, Cedars Sinai Medical Centre, Los Angeles, California 90048, USA.
出版信息
Br J Ophthalmol. 1998 Dec;82(12):1401-6. doi: 10.1136/bjo.82.12.1401.
AIMS
To determine the interobserver and the intraobserver reliability of a published classification scheme for corneal topography in normal subjects using the absolute scale.
METHOD
A prospective observational study was done in which 195 TMS-1 corneal topography maps in the absolute scale were independently classified twice by three classifiers--a cornea fellow, an ophthalmic technician, and an optometrist. From these observations the interobserver reliability for each category and the intraobserver reliability for each observer were determined in terms of the median weighted kappa statistic for each category and for each observer.
RESULTS
For interobserver reliability, the median weighted kappa statistic for each category varied from 0.72 to 0.97 and for intraobserver reliability the range was 0.79 to 0.98.
CONCLUSION
This classification scheme is extremely robust and even in the hands of less experienced observers with minimal training it can be relied upon to provide consistent results.
目的
使用绝对标度确定已发表的正常受试者角膜地形图分类方案的观察者间和观察者内可靠性。
方法
进行了一项前瞻性观察研究，其中三位分类者（一位角膜专科医生、一名眼科技术员和一名验光师）对195张绝对标度的TMS-1角膜地形图进行了两次独立分类。根据这些观察结果，通过计算每个类别和每个观察者的中位数加权kappa统计量，确定了每个类别的观察者间可靠性和每个观察者的观察者内可靠性。
结果
对于观察者间可靠性，每个类别的中位数加权kappa统计量在0.72至0.97之间变化，对于观察者内可靠性，范围为0.79至0.98。
结论
该分类方案非常可靠，即使是经验较少且训练最少的观察者也可依靠它获得一致的结果。
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