Participant characteristics (N = 293).

The Generalised Anxiety Disorder Dimensional Scale is a new measure of generalised anxiety disorder developed to assist clinicians in the dimensional assessment of generalised anxiety disorder by the Diagnostic and Statistical Manual (Fifth Edition) Anxiety, Obsessive-Compulsive Spectrum, Posttraumatic, and Dissociative Disorder Work Group. This study aims to evaluate the psychometric properties of the scale in an Australian community sample. A sample of 293 Australians (72.7% female) aged between 18 and 73 (M = 28.31 years; SD = 12.11 years) was recruited. Participants completed the Generalised Anxiety Disorder Dimensional Scale, as well as related measures used to assess convergent and discriminant validity. A small proportion of the sample (n = 21) completed the scale a second time to assess test-retest reliability. The scale demonstrated a unidimensional factor structure, good internal consistency (Cronbach’s α = .94), good test-retest reliability (ICC = .85), good convergent validity with the Generalised Anxiety Disorder– 7 item (rs = .77), and discriminant validity with the Panic Disorder Severity Scale–Self Report (rs = .63). The scale appears to be a reliable and valid measure of generalised anxiety disorder symptomology for use in the Australian population.广泛性焦虑障碍维度量表（Generalised Anxiety Disorder Dimensional Scale）是由《精神障碍诊断与统计手册（第五版）（Diagnostic and Statistical Manual (Fifth Edition)）》焦虑、强迫谱系、创伤后及分离障碍工作组开发的新型测评工具，旨在协助临床医师对广泛性焦虑障碍进行维度化评估。本研究旨在评估该量表在澳大利亚社区样本中的心理测量学属性。研究共招募293名澳大利亚受试者，其中72.7%为女性，年龄介于18至73岁之间（平均年龄M=28.31岁，标准差SD=12.11岁）。所有受试者均完成了广泛性焦虑障碍维度量表，以及用于评估聚合效度与区分效度的相关测评工具。其中21名受试者（占总样本的小部分）在首次测评后再次完成了该量表，以评估其重测信度。结果显示，该量表具备单维因子结构，内部一致性良好（克朗巴赫α系数=0.94），重测信度优异（组内相关系数（Intraclass Correlation Coefficient，ICC）=0.85）；与7条目广泛性焦虑障碍量表（Generalised Anxiety Disorder–7 item）的相关系数rs=0.77，聚合效度良好，与自评版惊恐障碍严重程度量表（Panic Disorder Severity Scale–Self Report）的相关系数rs=0.63，区分效度良好。综上，该量表可作为可靠且有效的测评工具，用于澳大利亚人群的广泛性焦虑障碍症状评估。