BMC psychiatry · 2025
Psychometric properties of the German version of the clinician-administered PTSD scale for DSM-5 (CAPS-5) in routine clinical settings: a multi-trait/multi-method study in civilians and military personnel.
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Cwik Jan Christopher, Spies Jan, Kessler Henrik, Herpertz Stephan, Woud Marcella L, Blackwell Simon E, Willmund Gerd, Zimmermann Peter, Koch Eileen, Bohnacker Vincent, Klaer Benjamin, Schnyder Ulrich, Rau Heinrich, Köhler Kai
Аннотация
BACKGROUND: The Clinician-Administered PTSD Scale (CAPS-5) is a structured diagnostic interview developed for diagnosing post-traumatic stress disorder (PTSD). To ensure compliance with PTSD inclusion criteria, an initial study investigated the psychometric properties and factorial structure of the German version of CAPS-5 using data collected previously. The present study's objective was to validate the robustness of the psychometric properties of the German CAPS-5 by assessing its validity within a routine clinical context.
METHODS: A total of 288 participants were recruited for the study. The validity of the German CAPS-5 was assessed using a multi-trait/multi-method design. Additionally, the study explored internal consistency, test-retest reliability, interrater reliability, and the interview's diagnostic accuracy. Ultimately, a cut-off score was determined through receiver operating characteristics curve (ROC) analyses.
RESULTS: The study demonstrated good to excellent internal consistency, test-retest reliability, interrater reliability, construct validity, and diagnostic accuracy for the German CAPS-5. Furthermore, the study established a cut-off score of ≥ 39 for the German CAPS-5 sum score.
DISCUSSION: The German CAPS-5 emerged as a structured diagnostic interview exhibiting good to excellent psychometric properties. The findings indicated solid convergent validity of the German CAPS-5; however, further research is warranted to investigate its divergent validity.
TRIAL REGISTRATION: DRKS00015325 ( https://www.drks.de ; registered on January 10, 2019).
METHODS: A total of 288 participants were recruited for the study. The validity of the German CAPS-5 was assessed using a multi-trait/multi-method design. Additionally, the study explored internal consistency, test-retest reliability, interrater reliability, and the interview's diagnostic accuracy. Ultimately, a cut-off score was determined through receiver operating characteristics curve (ROC) analyses.
RESULTS: The study demonstrated good to excellent internal consistency, test-retest reliability, interrater reliability, construct validity, and diagnostic accuracy for the German CAPS-5. Furthermore, the study established a cut-off score of ≥ 39 for the German CAPS-5 sum score.
DISCUSSION: The German CAPS-5 emerged as a structured diagnostic interview exhibiting good to excellent psychometric properties. The findings indicated solid convergent validity of the German CAPS-5; however, further research is warranted to investigate its divergent validity.
TRIAL REGISTRATION: DRKS00015325 ( https://www.drks.de ; registered on January 10, 2019).