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Symptom structure of ICD-11 Complex Posttraumatic Stress Disorder (CPTSD) in trauma-exposed foster children: examining the International Trauma Questionnaire - Child and Adolescent Version (ITQ-CA).

ABSTRACT: Background: The 11th edition of the International Classification of Diseases (ICD-11) introduces Posttraumatic Stress Disorder (PTSD) and Complex Posttraumatic Stress Disorder (CPTSD) as two distinct trauma-related disorders. Numerous studies support the proposed symptom structure of ICD-11 CPTSD in adults, but only a few studies have examined CPTSD symptom structure in children, reporting diverging results. To assess ICD-11 CPTSD in children, the International Trauma Questionnaire (ITQ) was recently adapted for children and adolescents (ITQ-CA), with no validated German version available yet. Objective: This study aimed (1) to test the symptom structure of ICD-11 CPTSD in a sample of trauma-exposed foster children using the ITQ-CA, and (2) to examine the concurrent, convergent and discriminant validity of the German ITQ-CA. Method: Altogether, 161 Austrian foster children completed a set of standardized measures, resulting in a final sample of 135 trauma-exposed foster children meeting the inclusion criteria. Psychometric properties of the ITQ-CA were assessed using confirmatory factor analysis (CFA), bivariate correlations and multivariate regression. Results: CFA supported ICD-11 CPTSD symptom structure in children as a two-factor higher-order model with PTSD and Disturbances in Self-Organization (DSO) as correlated factors with very good model fit, while a one-factor higher-order model also fitted the data very well. High factor loadings and excellent levels of internal reliability evidenced the psychometric adequacy of the ITQ-CA. Concurrent and convergent validity were evidenced by high correlations between ITQ-CA scales and criterion variables (PTSD symptoms, depression, anxiety, dissociation, lifetime traumatization). Discriminant validity was partly supported by PTSD and DSO being differently predicted by exogenous criterion variables. Conclusions: CPTSD symptom structure in children is in support of the ICD-11 conceptualization. The reliability and validity of the German ITQ-CA are evidenced for the first time, identifying it as an easy-to-use screening instrument to assess ICD-11 PTSD and CPTSD in children. Further implications and areas for upcoming studies are discussed.

SUBMITTER: Haselgruber A

PROVIDER: S-EPMC7678682 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:Background: Children and adolescents in foster care often experience many co-occurring subtypes of maltreatment. However, little is known about different combinations of maltreatment subtypes, referred to as maltreatment classes. Furthermore, the association between those maltreatment classes and ICD-11 posttraumatic stress disorder (PTSD) and complex PTSD (CPTSD) has not been investigated in children and adolescents. In previous studies, classes characterized by cumulative maltreatment were associated with severe psychopathological symptoms. So far, no study investigated ICD-11 PTSD and CPTSD. Objective: The first aim of this study was the detection of distinct maltreatment classes by examining frequently co-occurring maltreatment subtypes. The second aim was the examination of the association between those maltreatment classes and ICD-11 PTSD and CPTSD. Method: Participants were 147 children and adolescents currently living in foster care institutions in Lower Austria. Maltreatment history, ICD-11 PTSD and CPTSD were assessed using standardized self-report questionnaires. Latent class analysis was applied to examine maltreatment subtypes. χ2 difference testing was used to examine class associations with PTSD and CPTSD. Results: Three latent classes that comprised different subtypes of maltreatment were identified (limited maltreatment, n = 49; high neglect, n = 53; cumulative maltreatment, n = 45). Cumulative maltreatment was associated with higher symptom severity of PTSD and CPTSD than the limited maltreatment and the high neglect class, with effect sizes ranging from 0.62 to 0.93. Conclusions: The association of the cumulative maltreatment class with the highest symptom severity of PTSD and CPTSD highlights the detrimental effect of cumulative maltreatment. The detection of a high neglect class identifies children and adolescents, who are at high-risk of experiencing future maltreatment because of their previous experiences of neglect and the associated lack of protection. The examination of the association of distinct maltreatment classes with ICD-11 PTSD and CPTSD might provide implications for targeted prevention, assessment and treatment.

Project description:Recent work inspired by graph theory has begun to conceptualize mental disorders as networks of interacting symptoms. Posttraumatic stress disorder (PTSD) symptom networks have been investigated in clinical samples meeting full diagnostic criteria, including military veterans, natural disaster survivors, civilian survivors of war, and child sexual abuse survivors. Despite reliable associations across reported networks, more work is needed to compare central symptoms across trauma types. Additionally, individuals without a diagnosis who still experience symptoms, also referred to as subthreshold cases, have not been explored with network analysis in veterans. A sample of 1,050 Iraq/Afghanistan-era U.S. military veterans (851 males, mean age = 36.3, SD = 9.53) meeting current full-criteria PTSD (n = 912) and subthreshold PTSD (n = 138) were assessed with the Structured Clinical Interview for DSM-IV Disorders (SCID). Combat Exposure Scale (CES) scores were used to group the sample meeting full-criteria into high (n = 639) and low (n = 273) combat exposure subgroups. Networks were estimated using regularized partial correlation models in the R-package qgraph, and robustness tests were performed with bootnet. Frequently co-occurring symptom pairs (strong network connections) emerged between two avoidance symptoms, hypervigilance and startle response, loss of interest and detachment, as well as, detachment and restricted affect. These associations replicate findings reported across PTSD trauma types. A symptom network analysis of PTSD in a veteran population found significantly greater overall connectivity in the full-criteria PTSD group as compared to the subthreshold PTSD group. Additionally, novel findings indicate that the association between intrusive thoughts and irritability is a feature of the symptom network of veterans with high levels of combat exposure. Mean node predictability is high for PTSD symptom networks, averaging 51.5% shared variance. With the tools described here and by others, researchers can help refine diagnostic criteria for PTSD, develop more accurate measures for assessing PTSD, and eventually inform therapies that target symptoms with strong network connections to interrupt interconnected symptom complexes and promote functional recovery.

Dataset Information

Symptom structure of ICD-11 Complex Posttraumatic Stress Disorder (CPTSD) in trauma-exposed foster children: examining the International Trauma Questionnaire - Child and Adolescent Version (ITQ-CA).

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