Murray A L, McKenzie K
Centre for Cognitive Ageing & Cognitive Epidemiology, Department of Psychology, University of Edinburgh, Edinburgh, UK.
J Intellect Disabil Res. 2014 Dec;58(12):1179-84. doi: 10.1111/jir.12115. Epub 2014 Jan 27.
Severity of intellectual disability (ID) is associated with a range of outcomes for the individual and having an indication of severity can help inform support needs. Previous research has not evaluated whether screening tools can accurately ascertain severity category in addition to providing a red flag for the presence of ID.
We used multi-category receiver operating characteristic (ROC) analysis to assess whether the Child and Adolescent Intellectual Disability Screening Questionnaire (CAIDS-Q) could be used clinically to classify individuals (n = 191) aged between 12 and 18 according to British Psychological Society (BPS) categories of severity of impairment.
The volume under the surface statistic (VUS) was 0.59. The optimal cut-points estimated based on the ROC surface and Youden Index provided correct classification probabilities for the severe, significant and non-ID groups of 0.44, 0.63 and 0.86 and 0.79, 0.29 and 0.88 respectively.
While the CAIDS-Q can accurately discriminate between those with and without ID, and provides a heuristic for severity of ID, the results indicate that it does not reliably identify whether an individual falls into the severe or significant category of intellectual impairment.
智力残疾（ID）的严重程度与个体的一系列结果相关，了解严重程度有助于确定支持需求。先前的研究尚未评估筛查工具除了能为ID的存在提供警示信号外，是否还能准确确定严重程度类别。
我们使用多类别受试者工作特征（ROC）分析来评估儿童和青少年智力残疾筛查问卷（CAIDS-Q）是否可在临床上用于根据英国心理学会（BPS）的损伤严重程度类别对12至18岁的个体（n = 191）进行分类。
曲面下面积统计量（VUS）为0.59。根据ROC曲面和尤登指数估计的最佳切点，为重度、中度和非ID组提供的正确分类概率分别为0.44、0.63和0.86，以及0.79、0.29和0.88。
虽然CAIDS-Q能够准确区分有无ID的个体，并为ID的严重程度提供一种启发式方法，但结果表明它不能可靠地确定个体是否属于重度或中度智力障碍类别。
