DOI: 10.1002/alz.074676 ISSN: 1552-5260

Assessing posttraumatic stress disorder with patients suffering from neurocognitive disorder: development of the PTSD with NCD Inventory (PNI)

Estelle Coeur, Alexandre Derreumaux, Philippe Robert, Xavier Corveleyn
  • Psychiatry and Mental health
  • Cellular and Molecular Neuroscience
  • Geriatrics and Gerontology
  • Neurology (clinical)
  • Developmental Neuroscience
  • Health Policy
  • Epidemiology



PTSD and NCD have common symptoms such as mood disorders (depressive symptoms, aggressivity, etc.) or cognitive disorders (executive dysfunctionning, amnesia, etc.). Due to these similarities, and because existing tools are not suitable for this population specificities, PTSD diagnosis may be difficult. Based on the existing literature, a new screening tool was created, allowing a hetero assessment of PTSD for this population. This study consists in explaining the development and the pre‐testing of our new tool, following specific scale development guidelines.


A research was conducted to analyze the inventory construct which allowed us to analyze over 50 tools and create our items. An expert panel assessed the first version, which was used in a protocol conducted with 44 participants suffering from NCD.


First, the tool was modified consequently to the expert panel’s review, for a total of 15 domains with 4 at 8 items. Cronbach’s alpha and Pearson’s correlation enlightened good reliability when tested with the 44 participants (inventory’s Cronbach’s alpha = 0.75). By the end of the pilot testing, 13 domains composed of 70 items were kept.


The different validation steps lead to the creation of a new hetero‐assessing tool with specific PTSD items and suitable to a population with NCD. Domains will gauge both the symptoms frequency and impact. According to literature, this tool will focus on DSM‐5 criteria A, B and E. The next step will be to analyze the PTSD with NCD Inventory’s psychometric properties.

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