A network analysis of culturally relevant anxiety sensitivity and posttraumatic stress disorder symptoms in Cambodians

Concurrent and convergent validity of culture-specific psychopathology syndromes among Cambodian adolescents

Psychopathology is defined in part by its impacts on life functioning (e.g., fulfillment of daily responsibilities at work or school, in family relationships). Relations to life functioning are particularly important in the validation of culture-specific syndromes (patterns of mental health symptoms specific to a particular culture), to demonstrate that culture-specific symptom patterns do in fact represent pathology. The current study's goal was to assess the construct validity of the Cambodian Somatic Symptom and Syndrome Inventory (CSSI). The study focused on the statistically unique effects of the CSSI on life functioning (i.e., effects of the CSSI on life functioning, controlling for Western psychopathology syndromes), to determine whether the CSSI contributes information beyond standard Western measures, which would support CSSI culture-specific convergent validity. Because adolescence is a key period when psychopathology often develops, study participants were 391 high-school students in one urban and one rural area of Cambodia. Participants completed the CSSI, the Western psychopathology surveys Patient Health Questionnaire (PHQ-9) and Generalized Anxiety Disorder questionnaire (GAD-7), and life functioning measures assessing functional impairment, quality of life, and help-seeking. Results indicated strong CSSI concurrent validity (canonical correlation = 0.75) with the PHQ-9 and GAD-7, and CSSI total effects convergent validity on life functioning indicators. All CSSI statistically unique effects (controlling for the PHQ-9 and GAD-7) on life functioning measures were non-significant indicating that the CSSI, shown to be a valid assessment measure in the current study, does not add predictive information beyond standard Western measures. A key limitation that should be considered in interpretation of these results is that the life functioning measures, although reviewed by Khmer psychologists, were Western-based, thus potentially inflating relations with Western psychopathology measures.

The network structure of posttraumatic stress disorder among Filipina migrant domestic workers: comorbidity with depression

BACKGROUND

Labour migrants are exposed to potentially traumatic events throughout the migration cycle, making them susceptible to developing mental disorders. Posttraumatic stress disorder (PTSD) is often comorbid with depression. Comorbidity worsens the course of illness, prognosis, treatment response, and increases suicidal risk. Using network analysis, this study examined the structure of PTSD and depression in a sample of migrant domestic workers, an especially vulnerable community of labour migrants. This study sought to derive the central or most important symptoms, strongest edges or relationships among symptoms, and bridge symptoms between PTSD and depression.

METHODS

Data were obtained from 1,375 Filipina domestic workers in Macao SAR, China. Data from a subsample of 1,258 trauma-exposed participants were analysed using R software.

RESULTS

Most of the strongest edges were within the same disorder and, for PTSD, within the same symptom cluster. Highest node centrality were PCL-5's 'avoid thoughts', 'lose interest', 'negative emotions', and 'not concentrate', and PHQ-9's 'sleep difficulties'. The bridge symptoms were PHQ-9's 'sleep difficulties,' 'psychomotor agitation/retardation,' and 'fatigue,' PCL-5's 'not concentrate', and PHQ-9's 'worthlessness' and 'anhedonia'.

LIMITATIONS

Results may not generalize to Filipino migrant workers in other occupations and to male migrant workers. Potentially relevant symptoms like somatic symptoms and fear of somatic and mental symptoms were not included.

CONCLUSIONS

Central and bridge symptoms are the most important nodes in the network. Developing interventions targeting these symptoms, particularly depression symptoms, is a promising alternative to PTSD treatment given substantial barriers to specialist care for this population.