Development and Evaluation of the Dutch Clinician-Administered PTSD Scale for DSM-5 (CAPS-5)


Background: In 2013, the Clinician-Administered PTSD Scale, the golden standard to assess PTSD, was adapted to the DSM-5 (CAPS-5).


Objective: This project aimed to develop a clinically relevant Dutch translation of the CAPS-5 and to investigate its psychometric properties.


Method: We conducted a stepped translation including Delphi rounds with a crowd of 44 Dutch psychotrauma experts and five senior psychotrauma experts. Using partial crowd-translations, two professional translations and the official Dutch translation of the DSM-5, each senior expert aggregated one independent translation. Consensus was reached plenary. After back-translation, comparison with the original CAPS-5 and field testing, a last round with the senior experts resulted in the final version. After implementation clinicians conducted CAPS-5 interviews with 669 trauma-exposed individuals referred for specialized diagnostic assessment. Reliability of the Dutch CAPS-5 was investigated through internal consistency and interrater reliability analyses, and construct validity through confirmatory factor analysis (CFA). Results: CAPS-5 total severity score showed high internal consistency (α = .90) and interrater reliability (ICC = .98, 95% CI: .94–.99). CAPS-5 diagnosis showed modest interrater reliability (kappa = .59, 95% CI: .20–.98). CFA with alternative PTSD models revealed adequate support for the DSM-5 four-factor model, but a six-factor (Anhedonia) model fit the data best.


Conclusions: The Dutch CAPS-5 is a carefully translated instrument with adequate psychometric properties. Current results add to the growing support for more refined (six and seven) factor models for DSM-5 PTSD indicating that the validity and clinical implications of these models should be objective of further research

Manon A. Boeschoten, Niels Van der Aa, Anne Bakker, F. Jackie June Ter Heide, Marthe C. Hoofwijk, Ruud A. Jongedijk, Agnes Van Minnene, Bernet M. Elzinga and Miranda Olff | 2018
In: European Journal of Psychotraumatology, ISSN 2000-8066 | 9 | 1 | 1546085
Diagnosis, Instruments, PTSD (DSM-5)