Allison Carrie, Williams Jo, Scott Fiona, Stott Carol, Bolton Patrick, Baron-Cohen Simon, Brayne Carol
University of Cambridge, UK.
Autism. 2007 Mar;11(2):173-85. doi: 10.1177/1362361307075710.
The Childhood Asperger Syndrome Test (CAST) is a 37-item parental self-completion questionnaire designed to screen for high-functioning autism spectrum conditions in epidemiological research. The CAST has previously demonstrated good accuracy for use as a screening test, with high sensitivity in studies with primary school aged children in mainstream schools. This study aimed to investigate test-retest reliability of the CAST in a high scoring sample. To this end, 73 parents filled in the second CAST (CAST-2) within approximately 2 months of the first administration of the CAST (CAST-1). Agreement above and below the cut-point of 15 was investigated. The kappa statistic for agreement (<15 versus > or =15) was 0.41. It was found that 70 percent (95% CI: 58, 80) of children did not move across the cut-point of 15. The correlation between the two test scores was 0.67 (Spearman's rho). The CAST shows moderate test-retest reliability in a high scoring sample, further evidence that it is a relatively robust screening tool for epidemiological research.
儿童阿斯伯格综合征测试（CAST）是一份包含37个条目的家长自填问卷，旨在用于流行病学研究中筛查高功能自闭症谱系障碍。CAST此前已证明作为筛查测试具有良好的准确性，在针对主流学校中适龄小学生的研究中具有较高的敏感性。本研究旨在调查CAST在高分样本中的重测信度。为此，73位家长在首次进行CAST（CAST - 1）后约2个月内填写了第二次CAST（CAST - 2）。对得分高于和低于15分的分界点的一致性进行了调查。一致性的kappa统计量（<15分与>或 = 15分）为0.41。结果发现，70%（95%置信区间：58, 80）的儿童得分未越过15分的分界点。两次测试分数之间的相关性为0.67（斯皮尔曼等级相关系数）。CAST在高分样本中显示出中等的重测信度，进一步证明它是流行病学研究中一种相对可靠的筛查工具。
