ArticleBrain and behavior2026
Preliminary Psychometric Properties of Panic Disorder Severity Scale-Self-Report Version: Validity, Reliability, and the Cut-Off Point in Persian Clinical Samples.
Article in Brain and behavior, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
introductionAccurate assessment of panic disorder (PD) severity requires brief and psychometrically sound instruments. The Panic Disorder Severity Scale-Self-Report (PDSS-SR) is widely used for this purpose. The present study aimed to evaluate the validity, reliability, and optimal cut-off point of the PDSS-SR in an Iranian sample.
methodFollowing a descriptive design, the clinical group of the sample consisted of 45 clinical patients diagnosed with PD (75.6% female), with a mean age of 34.04 years (standard deviation [SD] = 12.17) in Tehran in 2023 and 2024 referred to psychotherapy clinics, along with 18 non-PD individuals for the comparison group (83.3% female), with an average age of 31.17 (SD = 7.94). Data were analyzed using confirmatory factor analysis, correlation matrices, reliability coefficients, receiver operating characteristic (ROC) curves, sensitivity, specificity, and the estimation of cut-off points.
resultsThe construct validity of the PDSS-SR was confirmed through CFA, with adequate goodness-of-fit for the PDSS-SR single-factor structure. By calculating the correlation of PDSS-SR scores with scores on anxiety-related scales, convergent validity was obtained on average. The sensitivity and specificity obtained from the PDSS-SR identified the optimal cut-off point of 6.500 (area under curve [AUC] = 0.78), with sensitivity (90.70%) and specificity (61.11%) based on the Youden index. Reliability was obtained by calculating Cronbach's alpha, McDonald's omega, test-retest correlation coefficient, and intraclass correlation coefficient (ICC) as 0.864, 0.861, 0.716, and 0.864, respectively.
conclusionThis research found that the PDSS-SR had sufficient reliability, moderate convergent validity, and good construct validity in Iranian samples, with an optimal cut-off point of 6.50. Therefore, it can be applied in clinical settings.
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