A potentially traumatic event (PTE) contributes to trauma through its frequency, conditional probability of posttraumatic stress disorder (PTSD), and experience of other PTEs. A cross-sectional survey was conducted, enrolling 21,425 adults nationally representative of six European countries. Using the WHO-Composite International Diagnostic Interview, 8,797 were interviewed on 28 PTEs and PTSD. Prevalence of 12-month PTSD was 1.1%. When PTSD was present, the mean number of PTEs experienced was 3.2. In a multivariate analysis on PTEs and gender, six PTEs were found to be more traumatic, and to explain a large percentage of PTSD, as estimated by their attributable risk of PTSD: rape, undisclosed private event, having a child with serious illness, beaten by partner, stalked, beaten by caregiver.

Exposure of populations with psychosis to traumatic events (among them sexual trauma) has seldom been studied. In addition, the clinical features developed by victims with psychosis after a traumatic event are rarely taken into account. Sixty-four women with schizophrenia and 26 women with bipolar disorder (DSM-III-R diagnosed, 18-45 years, inpatients and outpatients) were interviewed using a clinician-rated battery of instruments, including a semi-structured questionnaire concerning sexual victimization and its impact. In childhood or adolescence, 36% of women with schizophrenia (vs 28% of those with bipolar disorder) had been victims of sexual abuse involving body contact. In the women with schizophrenia, this sexual abuse was associated with addictions, suicide attempts and becoming psychiatric patients earlier. Over their lifetime, the prevalence of rape was 23% in the two clinical groups. In women with schizophrenia, rape was associated with a greater severity of their disorder and addictions. Moreover, a frequent repetition of sexual trauma was observed in women with schizophrenia, whereas such repeated traumas were less frequent in those with bipolar disorder. The results suggest that these two clinical groups are at risk of rape and the study highlight clinical features in victims with schizophrenia that have been described for other groups of victims of sexual abuse.

Sexual assault on children and adolescents has become a common topic of study, but there has been little research into the specific characteristics of the population of male victims. A national survey representative of school-age adolescents in France enabled us to study 465 adolescents reporting sexual assault (121 boys, 344 girls; mean age 15.4, SD 2.5 years). Girls were shown to be more frequently affected by certain medicopsychological symptoms: nightmares, multiple somatic complaints and some items concerning mood disorders. On the other hand, behavioural symptoms were much more frequently expressed in boys, in particular: repeated suicide attempts, running away, fits of violence and substance use. Boys presenting these symptoms should be questioned as a matter of routine concerning a history of sexual assault.

This study aimed to investigate the psychological disorders following rape as well as the course of Post-Traumatic Stress Disorder (PTSD), and to determine clinical factors predictive of chronic PTSD. Seventy-three rape victims were observed in a systematic follow-up study over 1 year following rape using structured interview schedules. The frequency of PTSD was massive. The early disorders predicting PTSD 1 year after rape included somatoform and dissociative disorders, agoraphobia and specific phobias as well as depressive and gender identity disorders and alcohol abuse. Through stepwise logistic regressions, the following were found to be good models of prediction of chronic PTSD 1 year after rape: for the characteristics of the traumas, intrafamily rape, being physically assaulted outside rape, and added physical violence during rape; for the early psychological and behavioural attitudes, low self-esteem, permanent feelings of emptiness and running away; and for early mental disorders, agoraphobia and depressive disorders. Finally, among all these predictive factors, added physical violence during rape, low self-esteem, permanent feelings of emptiness and agoraphobia were shown to constitute a strong model of predictors. People presenting features such as the predictive factors of chronic PTSD found in the study should be asked about a history of rape and symptoms of PTSD.

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During validation of a French version of the DES, the study showed that dissociation is considerably linked to rape-trauma victim populations.

Objective: Somatoform dissociative phenomena have long existed in psychiatric nosology but few quantitative data exist. This study aims at substantiating the association between trauma and somatoform dissociation, and presenting elements of validation of the French version of the Somatoform Dissociation Questionnaire . Indeed, the SDQ-20 is a simple to use self-report questionnaire developed to quantify somatoform dissociative symptoms. Methods: One hundred forty psychiatric outpatients consulting consecutively in the University Hospital in Tours, France, were included, and filled in the SDQ-20, the Dissociative Experiences Scale (DES), an inventory of traumatic experiences, and underwent a structured interview (CAPS) for diagnosis of Posttraumatic Stress Disorder (PTSD) according to the DSM-IV criteria. Results: We found a strong association between the SDQ-20 mean score and current PTSD or past PTSD. The Principal Components Analysis of this French version yielded a solution containing three factors: sensory neglect, subjective reactions to perceptive distortions, vigilance modulation disturbance. The reliability of this French version was studied through the Cronbach's α coefficient (0.83). Both scales of dissociation used in our study (DES, were shown to be highly correlated. Conclusion: This study confirms the strong association between trauma and dissociative symptoms as a whole, including somatoform dissociation. The SDQ-20 appeared to be a potentially useful screening instrument for dissociative disorders. It shed light on a "sub-dimension" of the dissociative phenomenon, when expressed in a somatic way.