Factor validation of the International Trauma Questionnaire in a sample of trauma-exposed Colombian adults in the MI-VIDA study

Background
The ICD-11 introduced a new diagnosis of complex post-traumatic stress disorder (CPTSD) defined by disturbances in self-organisation in addition to traditional post-traumatic stress disorder symptoms. The International Trauma Questionnaire (ITQ) is the established measure of this construct and has been validated for use in a variety of populations and languages; however, evidence for the measure's use in Latin America is limited.

Aims
This study sought to validate the factor structure of the Latin American Spanish version of the ITQ in a trauma-exposed sample in Colombia.

Method
Confirmatory factor analysis was used to assess a range of factor models validated previously, including first- and second-order factor models.

Results
Assessment of fit indices demonstrated that a correlated six-factor model comprised of re-experiencing, avoidance, sense of threat, affect dysregulation, negative self-concept and disturbed relationships provided the best fit for these data. Factor loadings for this model were found to be high and statistically significant.

Conclusion
Results concur with prior research validating the use of alternative language versions of the ITQ internationally, and with the theoretical underpinnings of the CPTSD diagnostic category. The ITQ is therefore a valid measure of CPTSD in this Latin American sample. Further validation research is needed in clinical populations in this region.