Posttraumatic stress disorder symptoms among trauma-exposed adolescents from low- and middle-income countries.

BACKGROUND: Exposure to traumatic events in childhood is associated with the development and maintenance of various psychiatric disorders, but most frequently with posttraumatic stress disorder (PTSD). The aim of this study was to evaluate the types of traumatic events experienced and the presence and predictors of PTSD symptoms among adolescents from the general population from ten low- and middle-income countries (LMICs). METHODS: Data were simultaneously collected from 3370 trauma-exposed adolescents (mean age = 15.41 [SD = 1.65] years, range 12-18; 1465 (43.5%) males and 1905 (56.5%) females) in Brazil, Bulgaria, Croatia, Indonesia, Montenegro, Nigeria, the Palestinian Territories, the Philippines, Romania, and Serbia, with Portugal, a high-income country, as a reference point. The UCLA PTSD Reaction Index for the DSM-5 (PTSD-RI-5) was used for the assessment of traumatic events and PTSD symptoms. RESULTS: The most frequently reported traumatic events were death of a close person (69.7%), witnessing violence other than domestic (40.5%), being in a natural disaster (34.4%) and witnessing violent death or serious injury of a close person (33.9%). In total, 28.5% adolescents endorsed two to three DSM-5 PTSD criteria symptoms. The rates of adolescents with symptoms from all four DSM-5 criteria for PTSD were 6.2-8.1% in Indonesia, Serbia, Bulgaria, and Montenegro, and 9.2-10.5% in Philippines, Croatia and Brazil. From Portugal, 10.7% adolescents fall into this category, while 13.2% and 15.3% for the Palestinian Territories and Nigeria, respectively. A logistic regression model showed that younger age, experiencing war, being forced to have sex, and greater severity of symptoms (persistent avoidance, negative alterations in cognitions and mood, and alterations in arousal and reactivity) were significant predictors of fulfilling full PTSD criteria. CONCLUSIONS: Nearly every third adolescent living in LMICs might have some PTSD symptoms after experiencing a traumatic event, while nearly one in ten might have sufficient symptoms for full DSM-5 PTSD diagnosis. The findings can inform the generation of PTSD burden estimates, allocation of health resources, and designing and implementing psychosocial interventions for PTSD in LMICs.

External locus-of-control partially mediates the association between cumulative trauma exposure and posttraumatic stress symptoms among adolescents from diverse background.

Locus of control (LOC) is a modifiable mediator of symptoms of posttraumatic stress disorder (PTSD) among traumatized individuals and a potential target of intervention. Compared with studies involving adults, the potential mediation effect of LOC on PTSD symptoms among trauma-exposed children and adolescents is relatively under-explored. This study, therefore, assessed the mediation effects of LOC on the association between lifetime cumulative trauma and PTSD symptoms among a large cohort of adolescents from different cultural background.Cross-sectional study.LOC was determined using the Multi-Dimension Locus of Control Scale; Posttraumatic stress symptoms using the UCLA PTSD Reaction Index; and other significant negative life events using the Life Events Checklist.Among 3826 adolescents who completed the study, external LOC explained 24% of variance (R2 = .24; F2,3823 = 619.01; p < .01) in PTSD symptoms and had significant indirect effect on the relationship between self-reported cumulative traumatic event exposure and PTSD symptoms (ß = .14; 95% BC CI [.10, .20]). Moderated mediation results showed significant potentiation of the moderation effects among older adolescents; boys; and those from more affluent families.The study further strengthened the hitherto limited evidence that external LOC partially mediate the relationship between cumulative trauma exposure and PTSD symptoms among adolescents.

UCLA PTSD reaction index for DSM-5 (PTSD-RI-5): a psychometric study of adolescents sampled from communities in eleven countries.

Background: Children and adolescents are often exposed to traumatic events, which may lead to the development of posttraumatic stress disorder (PTSD). It is therefore important for clinicians to screen for potential symptoms that can be signs of PTSD onset. PTSD in youth is a worldwide problem, thus congruent screening tools in various languages are needed. Objective: The aim of this study was to test the general psychometric properties of the Traumatic Stress Disorder Reaction Index for children and adolescents (UCLA PTSD) Reaction Index for DSM-5 (PTSD-RI-5) in adolescents, a self-report instrument intended to screen for trauma exposure and assess PTSD symptoms. Method: Data was collected from 4201 adolescents in communities within eleven countries worldwide (i.e. Brazil, Bulgaria, Croatia, Indonesia, Montenegro, Nigeria, Palestine-Gaza, Philippines, Portugal, Romania, and Serbia). Internal consistency, discriminant validity, and a confirmatory factor analysis of a four-factor model representing the main DSM-5 symptoms of the PTSD-RI-5 were evaluated. Results: The PTSD-RI-5 total score for the entire sample shows very good reliability (α = .92) as well as across all countries included (α ranged from .90 to .94). The correlations between anxiety/depressive symptoms and the PTSD-RI-5 scores were below .70 indicating on good discriminant validity. The four-factor structure of the scale was confirmed for the total sample and data from six countries. The standardized regression weights for all items varied markedly across the countries. The lack of a common acceptable model across all countries prevented us from direct testing of cross-cultural measurement invariance. Conclusions: The four-factor structure of the PTSD-RI-5 likely represents the core PTSD symptoms as proposed by the DSM-5 criteria, but there could be items interpreted in a conceptually different manner by adolescents from different cultural/regional backgrounds and future cross-cultural evaluations need to consider this finding.

Antecedentes: Los niños y adolescentes a menudo están expuestos a eventos traumáticos, que pueden llevar al desarrollo de un trastorno de estrés postraumático (TEPT). Por lo tanto, es importante que los médicos examinen los posibles síntomas que pueden ser signos del inicio de un TEPT. Este trastorno en jóvenes es un problema global, por lo que se necesitan herramientas de detección congruentes en varios idiomas.Objetivo: El objetivo de este estudio fue probar en adolescentes las propiedades psicométricas generales del Índice de Reacción TEPT de la UCLA para el DSM-5 (PTSD-RI-5), que es un instrumento de auto-reporte destinado a evaluar la exposición al trauma y evaluar los síntomas de PTSD.Método: Los datos se recopilaron de 4201 adolescentes en comunidades dentro de once países alrededor del mundo (es decir, Brasil, Bulgaria, Croacia, Indonesia, Montenegro, Nigeria, Palestina-Gaza, Filipinas, Portugal, Rumania y Serbia). Se evaluó la consistencia interna, la validez discriminante y un análisis factorial confirmatorio de un modelo de cuatro factores que representa los principales síntomas del DSM-5 del PTSD-RI-5Resultados: La puntuación total de PTSD-RI-5 para toda la muestra reveló una muy buena confiabilidad (α = .92), así como en todos los países incluidos (α varió de .90 a .94). Las correlaciones entre los síntomas de ansiedad/depresión y las puntuaciones del PTSD-RI-5 fueron inferiores a .70, lo que indica una buena validez discriminante. La estructura de cuatro factores de la escala se confirmó para la muestra total y los datos de seis países. Las ponderaciones de regresión estandarizada variaron notablemente para todos los ítems en todos los países. La falta de un modelo aceptable común en todos los países nos impidió realizar pruebas directas de invariancia de medición intercultural.Conclusiones: La estructura de cuatro factores del PTSD-RI-5 probablemente representa los síntomas centrales del TEPT según lo propuesto por los criterios del DSM-5, pero podría haber elementos interpretados de manera conceptualmente diferente por adolescentes con diferentes orígenes culturales/regionales, y futuras evaluaciones interculturales deben considerar este hallazgo.