Reliability and validity of the self-report version of the Panic Disorder Severity Scale in Korea.
BACKGROUND
The self-report version of the Panic Disorder Severity Scale (PDSS-SR) has been developed recently and has demonstrated good psychometric properties. However, there is no cross-cultural evaluation of this scale. The purpose of this study was to confirm the reliability and validity of the PDSS-SR in Korean subjects.


METHODS
We studied 148 patients with principal DSM-IV diagnoses of panic disorder who underwent formal structured diagnostic assessment and the PDSS interview. The participants completed self-report measures including the PDSS-SR, Anxiety Sensitivity Index-Revised, Albany Panic and Phobia Questionnaire, Beck Depression Inventory, Beck Anxiety Inventory, and Spielberger State-Trait Anxiety Inventory-Trait Version.


RESULTS
The PDSS-SR had a single-factor structure, with all seven items having salient loadings. Cronbach's alpha for the PDSS-SR was .88 and intraclass correlation coefficient was .71 between PDSS-SR and PDSS. Also, the scale showed excellent 1-day test-retest reliability and demonstrated significant correlation with other anxiety-related measures. In addition, the PDSS-SR was sensitive to change with pharmacological treatment.


CONCLUSIONS
The findings of this study strongly support the reliability and validity of the PDSS-SR. It is expected that this scale will be helpful in clinical settings and research protocols in Korea.
Department of Psychiatry, Samsung Medical Center, Sungkyunkwan University School of Medicine, South Korea.
Eun-Ho
EH
Lee
Ji-Hae
JH
Kim
Bum-Hee
BH
Yu
D000328:Adult; D000368:Aged; D000379:Agoraphobia / Q000175:diagnosis* / Q000188:drug therapy / Q000208:ethnology / Q000523:psychology; D018687:Antidepressive Agents, Second-Generation / Q000627:therapeutic use; D003431:Cross-Cultural Comparison; D005260:Female; D006801:Humans; D007723:Korea; D008297:Male; D008875:Middle Aged; D016584:Panic Disorder / Q000175:diagnosis* / Q000188:drug therapy / Q000208:ethnology / Q000523:psychology; D017374:Paroxetine / Q000627:therapeutic use; D010555:Personality Inventory / Q000706:statistics & numerical data*; D011594:Psychometrics / Q000706:statistics & numerical data; D015203:Reproducibility of Results; D014175:Translating; D055815:Young Adult
D018687:Antidepressive Agents, Second-Generation; D017374:Paroxetine