Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, & Stockholm Health Care Services, Stockholm County Council, Sweden.
Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, & Stockholm Health Care Services, Stockholm County Council, Sweden.
J Affect Disord. 2019 Oct 1;257:615-622. doi: 10.1016/j.jad.2019.07.057. Epub 2019 Jul 5.
To minimize the burden in detecting and monitoring Panic Disorder and Agoraphobia by developing a very brief scale with selected items from the Panic Disorder Severity Scale-Self Report (PDSS-SR), and to investigate the proposed scale's psychometric properties in a comorbid sample.
A sample of 5103 patients from the Internet Psychiatry Clinic in Sweden, diagnosed and treated with Internet-based cognitive behavioral therapy for panic disorder (n = 1390), social anxiety disorder (n = 1313) or depression (n = 2400), responded to the PDSS-SR. Six criteria related to factor structure, sensitivity to change and clinical representativeness were used to select items. Psychometric analyses for the selected very brief scale were performed.
Items 2 (distress during panic attacks) and 4 (agoraphobic avoidance), were selected to create the very brief PDSS-SR version. Correlations with the full scale were high at screening, pre and post, and for change (0.87-0.93). Categorical Omega was ⍵ = 0.74. With a cut-off of 3 points, the scale could detect panic disorder in a psychiatric sample with a sensitivity of 85% and a specificity of 66%.
Limitations include lack of healthy controls and lack of blinding on secondary outcome measures.
The proposed 2-item PDSS-SR version is a good candidate for a very brief panic disorder questionnaire, both for detecting cases and for measuring change. This is especially useful in clinical settings when measuring more than one condition at a time.
通过从惊恐障碍严重程度自评量表（PDSS-SR）中选择精选项目来开发一个非常简短的量表，从而最大限度地减少惊恐障碍和广场恐惧症的检测和监测负担，并在共病样本中研究该量表的心理测量特性。
从瑞典互联网精神病学诊所的 5103 名患者中抽取样本，这些患者被诊断并接受基于互联网的认知行为疗法治疗惊恐障碍（n=1390）、社交焦虑障碍（n=1313）或抑郁症（n=2400），他们对 PDSS-SR 做出了回应。使用与因子结构、对变化的敏感性和临床代表性相关的六项标准来选择项目。对所选非常简短量表进行心理测量分析。
选择项目 2（惊恐发作时的痛苦）和 4（广场恐惧症回避）来创建非常简短的 PDSS-SR 版本。在筛查、治疗前和治疗后以及变化时，与完整量表的相关性很高（0.87-0.93）。分类 Omega 为 ⍵=0.74。当以 3 分为截断值时，该量表可在精神病学样本中以 85%的灵敏度和 66%的特异性检测出惊恐障碍。
局限性包括缺乏健康对照者和缺乏对次要结局测量的盲法。
提出的 2 项 PDSS-SR 版本是一个非常简短的惊恐障碍问卷的良好候选者，既可以用于检测病例，也可以用于衡量变化。当同时测量多种情况时，这在临床环境中特别有用。
