Reliability testing of the Dutch version of the Radner Reading Charts
Reliability testing of the Dutch version of the Radner Reading Charts
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DOI：
10.1097/opx.0b013e31816bf58b
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发表时间：
2008-05-01
影响因子：
1.4
通讯作者：
Van Meurs, Jan C.
中科院分区：
文献类型：
--
作者：
Maajwee, Kristel;Mulder, Paul;Van Meurs, Jan C.
目的.对新开发的实际数字刻度荷兰Radner阅读量表在老年黄斑病变人群中的重测信度和图间信度进行统计分析。这些荷兰语拉德纳阅读图表是根据最初的德语拉德纳阅读图表的句子结构的严格原则开发的。36名年龄在50岁或以上的黄斑疾病受试者以随机顺序单眼阅读Radner阅读图表的三个图表两次，间隔1个月。根据受试者的距离logMAR视力将其分为三组（第1组，>= 0.1;第2组，0.12至0.4;第3组，0.42至0.8）。测量阅读敏锐度（logRAD，logMAR的阅读等效值）、logRAD评分、最大阅读速度、临界打印尺寸和logRAD/logMAR比值。使用方差分量分析来确定变异性的来源。结果。所有视力组和变量的重测和图表间的信度都很高。对于所有组，图表占所有测量值总变异性的最大5%。个体受试者对测量结果的影响最大（变异性的88 - 98%）。荷兰版本的拉德纳阅读图表提供了高度可靠的重测和图表间测量的阅读性能在一个异质组的受试者低于正常到低视力。本研究还表明，最初的德国拉德纳阅读图表的严格的句子结构原则也可以成功地用于其他语言。
Purpose. To statistically analyze the test-retest and inter-chart reliability of the newly developed actual logarithmically scaled Dutch Radner Reading Charts in an older population affected by macular disease. These Dutch Radner Reading Charts are developed according to the strict principles of sentence construction of the originally German language Radner Reading Charts.Methods. Thirty-six subjects aged 50 years or older and affected with a macular disease monocularly read the three charts of the Radner Reading Charts in a randomized order twice with 1 month in between. The subjects were divided into three groups according to their distance logMAR visual acuity (group 1, >= 0.1; group 2, 0.12 to 0.4; and group 3, 0.42 to 0.8). Reading acuity (logRAD, the reading equivalent of logMAR), logRAD score, maximum reading speed, critical print size, and logRAD/logMAR ratio were measured. Variance component analysis was used to determine the sources of variability.Results. The test-retest and inter-chart reliability was high for all visual acuity groups and variables. For all groups together the chart accounted for maximal 5% of the total variability for all measurements. The individual subject did have the largest influence on the measurements (88 to 98% of the variability).Conclusions. The Dutch version of the Radner Reading Charts provided high reliable test-retest and inter-chart measurements of reading performance in a heterogeneous group of subjects with subnormal to low vision. This study also showed that the strict principle's of sentence construction of the originally German Radner Reading Charts may also be successfully used for other languages.