Grading bulbar redness using cross-calibrated clinical grading scales.
Grading bulbar redness using cross-calibrated clinical grading scales.
复制标题
使用交叉校准的临床分级量表对球部发红进行分级。
DOI：
10.1167/iovs.10-7006
复制
发表时间：
2011
影响因子：
4.4
通讯作者：
T. Simpson
中科院分区：
文献类型：
--
作者：
Marc Schulze;N. Hutchings;T. Simpson
目的
确定使用交叉校准的McMonnies/Chapman-Davies（MC-D）、眼科研究所（IER）、Efron和经验证的延髓发红（VBR）分级量表获得的分级估计值的量表间一致性。
方法
每个分级量表的修改后的参考图像根据其在先前的心理物理缩放实验中确定的感知红色（在0至100的范围内）定位在桌子上。10名观察员被要求代表16个样本图像的感知眼球发红，将它们放置，一次一个，相对于每个尺度的参考图像。刻度上仅标记了0和100，但未标记参考图像的数字位置。将感知的发红作为从0开始放置的图像的测量位置，并在观察者之间取平均值。
结果
总体而言，感知的发红取决于样本图像和使用的参考量表（重复测量ANOVA; P = 0.0008）; 6个样本图像的感知发红在至少两个量表之间存在显著差异。一致性的尺度间相关系数范围为0.93（IER与Efron）至0.98（VBR与Efron）。重复性的标度间系数范围为0至100范围内的5个单位（IER与VBR）至8个单位（IER与Efron）。
结论
使用交叉校准的参考等级的眼球发红分级量表，可以比较不同的尺度获得的分级估计。感知的红色取决于尺度的参考图像的动态范围，其中红色估计通常被发现对于具有较短动态范围的尺度更高。
PURPOSE
To determine the between-scale agreement of grading estimates obtained with cross-calibrated McMonnies/Chapman-Davies (MC-D), Institute for Eye Research (IER), Efron, and Validated Bulbar Redness (VBR) grading scales.
METHODS
Modified reference images of each grading scale were positioned on a desk according to their perceived redness (within a 0 to 100 range) as determined in a previous psychophysical scaling experiment. Ten observers were asked to represent perceived bulbar redness of 16 sample images by placing them, one at a time, relative to the reference images of each scale. Only 0 and 100 were marked on the scale, but not the numerical position of the reference images. Perceived redness was taken as the measured position of the placed image from 0 and was averaged across observers.
RESULTS
Overall, perceived redness depended on the sample image and the reference scale used (repeated measures ANOVA; P = 0.0008); six sample images had a perceived redness that was significantly different between at least two of the scales. Between-scale correlation coefficients of concordance ranged from 0.93 (IER vs. Efron) to 0.98 (VBR vs. Efron). Between-scale coefficients of repeatability ranged from five units (IER vs. VBR) to eight units (IER vs. Efron) of the 0 to 100 range.
CONCLUSIONS
The use of cross-calibrated reference grades for bulbar redness grading scales allows comparison of grading estimates obtained with different scales. Perceived redness is dependent on the dynamic range of the reference images of the scale, with redness estimates generally being found to be higher for scales with a shorter dynamic range.
影响因子：
4.4
作者：
I. Bailey;M. Bullimore;T. Raasch;Hugh R. Taylor
通讯作者：
I. Bailey;M. Bullimore;T. Raasch;Hugh R. Taylor