Validation of the Danish Version of Perseverative Thinking Questionnaire (PTQ) – Introducing the PTQ Short Version

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  • Stine Bjerrum Moeller
  • Pia Veldt Larsen
  • Ida Marie T.P. Arendt
  • Thomas Ehring
  • Nina Reinholt
  • Morten Hvenegaard
  • Anne Bryde Christensen
  • Arnfred, Sidse Marie

Introduction: The Perseverative Thinking Questionnaire (PTQ) measures repetitive negative thinking and has been translated and validated in several countries. However, the PTQ has not been translated and validated in a Danish clinical sample. The aim of this paper was to evaluate the psychometric properties of the PTQ in a Danish clinical population and to introduce a shorter, 9-item version of the PTQ, the PTQ-9. Methods: Participants were recruited from a multicenter randomized clinical trial (N = 251). They all completed the PTQ and World Health Organization 5-item Wellbeing Index (WHO-5). Participants were further assessed with the 6-item Hamilton Anxiety Rating Scale (HAM-A6) and the 6-item Hamilton Depression Rating Scale (HAM-D6). Results: The 2nd order factor model with one higher order general factor and three lower order factors showed the best model fit for the PTQ and the PTQ-9. Both versions showed good internal consistency and the expected correlations with the constructs used for validation. Furthermore, using WHO-5 as primary outcome, both the PTQ and PTQ-9 versions were able to discriminate between treatment responders and nonresponders. Conclusion: The PTQ and the PTQ-9 showed satisfying psychometric properties in a Danish clinical sample, including sensitivity to change, and could be used to evaluate psychotherapeutic treatment. To minimize the burden for the patients, the PTQ-9 may be recommended for clinical use over the PTQ.

Original languageEnglish
JournalPsychological Test Adaptation and Development
Issue number1
Pages (from-to)310-318
Number of pages9
Publication statusPublished - 2023

Bibliographical note

Publisher Copyright:
© 2023 The Author(s).

    Research areas

  • clinimetrics, depression and anxiety disorders, Perseverative Thinking Questionnaire, repetitive negative thinking, transdiagnostic

ID: 379031146