Reply 1
The recently published International Trauma Questionnaire (ITQ) (Cloitre, Shevlin et al., 2018) is the only validated measure to assess ICD-11 CPTSD in adults, and was shown to exhibit convergent and discriminant validity in a number of studies (Haselgruper, 2020).
International Trauma Questionnaire (ITG) is a 22 question self reporting in adults. In the article measures and method’s review I studied, a 5 point Likert Scale was used to assess PTSD/CPTSD symptoms over the last two months. With scores from 0 which indicate (not at all) to 4 which indicate "extremely" Any scores greater than 2 indicate the presence of symptoms.
Redican’s Systematic review of the literature revealed classes of PTSD, CPTSD and a third class of low symtoms of the 36 studies that were included in the review (Redican, 2021). A two-factor second-order model was the best fit of the ITQ data. All the the cases were based on self reporting data which may include a varying degree of bias.