26 results on '"Joanne Mouthaan"'
Search Results
2. Sex-differential PTSD symptom trajectories across one year following suspected serious injury
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Mirjam van Zuiden, Sinha Engel, Jeanet F. Karchoud, Thomas J. Wise, Marit Sijbrandij, Joanne Mouthaan, Miranda Olff, and Rens van de Schoot
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ptsd ,sex ,gender ,longitudinal ,course ,onset ,injury ,latent growth mixture modelling ,bayesian ,Psychiatry ,RC435-571 - Abstract
Background Recent years have shown an increased application of prospective trajectory-oriented approaches to posttraumatic stress disorder (PTSD). Although women are generally considered at increased PTSD risk, sex and gender differences in PTSD symptom trajectories have not yet been extensively studied. Objective To perform an in-depth investigation of differences in PTSD symptom trajectories across one-year post-trauma between men and women, by interpreting the general trends of trajectories observed in sex-disaggregated samples, and comparing within-trajectory symptom course and prevalence rates. Method We included N = 554 participants (62.5% men, 37.5% women) from a multi-centre prospective cohort of emergency department patients with suspected severe injury. PTSD symptom severity was assessed at 1, 3, 6, and 12 months post-trauma, using the Clinician-Administered PTSD Scale for DSM-IV. Latent growth mixture modelling on longitudinal PTSD symptoms was performed within the sex-disaggregated and whole samples. Bayesian modelling with informative priors was applied for reliable model estimation, considering the imbalanced prevalence of the expected latent trajectories. Results In terms of general trends, the same trajectories were observed for men and women, i.e. resilient, recovery, chronic symptoms and delayed onset. Within-trajectory symptom courses were largely comparable, but resilient women had higher symptoms than resilient men. Sex differences in prevalence rates were observed for the recovery (higher in women) and delayed onset (higher in men) trajectories. Model fit for the sex-disaggregated samples was better than for the whole sample, indicating preferred application of sex-disaggregation. Analyses within the whole sample led to biased estimates of overall and sex-specific trajectory prevalence rates. Conclusions Sex-disaggregated trajectory analyses revealed limited sex differences in PTSD symptom trajectories within one-year post-trauma in terms of general trends, courses and prevalence rates. The observed biased trajectory prevalence rates in the whole sample emphasize the necessity to apply appropriate statistical techniques when conducting sex-sensitive research.
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- 2022
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3. Predicting transitions between longitudinal classes of post-traumatic stress disorder, adjustment disorder and well-being during the COVID-19 pandemic: protocol of a latent transition model in a general Dutch sample
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Lonneke Lenferink, Joanne Mouthaan, Anna M Fritz, Suzan Soydas, Marloes Eidhof, Marie-José van Hoof, Simon Groen, and Trudy Mooren
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Medicine - Published
- 2022
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4. Forecasting individual risk for long-term Posttraumatic Stress Disorder in emergency medical settings using biomedical data: A machine learning multicenter cohort study
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Katharina Schultebraucks, Marit Sijbrandij, Isaac Galatzer-Levy, Joanne Mouthaan, Miranda Olff, and Mirjam van Zuiden
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PTSD ,Traumatic stress ,Biomarkers ,Prognosis ,Machine learning ,HPA axis ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 ,Neurology. Diseases of the nervous system ,RC346-429 ,Neurophysiology and neuropsychology ,QP351-495 - Abstract
The necessary requirement of a traumatic event preceding the development of Posttraumatic Stress Disorder, theoretically allows for administering preventive and early interventions in the early aftermath of such events. Machine learning models including biomedical data to forecast PTSD outcome after trauma are highly promising for detection of individuals most in need of such interventions. In the current study, machine learning was applied on biomedical data collected within 48 h post-trauma to forecast individual risk for long-term PTSD, using a multinominal approach including the full spectrum of common PTSD symptom courses within one prognostic model for the first time. N = 417 patients (37.2% females; mean age 46.09 ± 15.88) admitted with (suspected) serious injury to two urban Academic Level-1 Trauma Centers were included. Routinely collected biomedical information (endocrine measures, vital signs, pharmacotherapy, demographics, injury and trauma characteristics) upon ED admission and subsequent 48 h was used. Cross-validated multi-nominal classification of longitudinal self-reported symptom severity (IES-R) over 12 months and bimodal classification of clinician-rated PTSD diagnosis (CAPS-IV) at 12 months post-trauma was performed using extreme Gradient Boosting and evaluated on hold-out sets. SHapley Additive exPlanations (SHAP) values were used to explain the derived models in human-interpretable form.Good prediction of longitudinal PTSD symptom trajectories (multiclass AUC = 0.89) and clinician-rated PTSD at 12 months (AUC = 0.89) was achieved. Most relevant prognostic variables to forecast both multinominal and dichotomous PTSD outcomes included acute endocrine and psychophysiological measures and hospital-prescribed pharmacotherapy.Thus, individual risk for long-term PTSD was accurately forecasted from biomedical information routinely collected within 48 h post-trauma. These results facilitate future targeted preventive interventions by enabling future early risk detection and provide further insights into the complex etiology of PTSD.
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- 2021
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5. Student Mental Health during the COVID-19 Pandemic: Are International Students More Affected?
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Liia Kivelä, Joanne Mouthaan, Willem van der Does, and Niki Antypa
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Background: The psychological well-being of students may be especially affected by the COVID-19 pandemic; international students can lack local support systems and represent a higher risk subgroup. Methods: Self-reported depressive symptoms, suicidal ideation, anxiety, post-traumatic stress disorder (PTSD), insomnia, alcohol use, academic stress, and loneliness were examined in two cohorts of university students (March 2020 n = 207, March 2021 n = 142). We investigated differences i) between 2020 and 2021, ii) between domestic and international students, and iii) whether differences between the two cohorts were moderated by student status. Results: More depressive symptoms, academic stress, and loneliness were reported in 2021. International students reported more depressive symptoms, suicidal ideation, anxiety, PTSD, academic stress, and loneliness. The main effect of cohort was not moderated by student status. Conclusions: International students had worse mental health outcomes overall, but were not affected more by the COVID-19 pandemic than domestic students.
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- 2024
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6. Trauma and trauma care in Europe
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Ingo Schäfer, Manoëlle Hopchet, Naomi Vandamme, Dean Ajdukovic, Wissam El-Hage, Laurine Egreteau, Jana Darejan Javakhishvili, Nino Makhashvili, Astrid Lampe, Vittoria Ardino, Evaldas Kazlauskas, Joanne Mouthaan, Marit Sijbrandij, Małgorzata Dragan, Maja Lis-Turlejska, Margarida Figueiredo-Braga, Luísa Sales, Filip Arnberg, Tetiana Nazarenko, Natalia Nalyvaiko, Cherie Armour, and Dominic Murphy
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psychotraumatology ,history ,estss ,europe ,trauma ,treatment ,care ,therapy ,Psychiatry ,RC435-571 - Abstract
The European countries have a long history of exposure to large-scale trauma. In the early 1990s the increasing awareness of the consequences of trauma within the mental health community led to the foundation of local societies for psychotraumatology across Europe and the European Society of Traumatic Stress Studies (ESTSS), which celebrated its 25th anniversary in 2018. The focus of this article is to describe the current state of care for survivors of trauma in the 15 European countries where ESTSS member societies have been established. Brief descriptions on the historical burden of trauma in each country are followed by an overview of the care system for trauma survivors in the countries, the state-of-the-art of interventions, current challenges in caring for survivors and the topics that need to be most urgently addressed in the future. The reports from the different countries demonstrate how important steps towards a better provision of care for survivors of trauma have been made in Europe. Given the cultural and economic diversity of the continent, there are also differences between the European countries, for instance with regard to the use of evidence-based treatments. Strategies to overcome these differences, like the new ESTSS training curricula for care-providers across Europe, are briefly discussed.
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- 2018
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7. Internet-based prevention of posttraumatic stress symptoms in injured trauma patients: design of a randomized controlled trial
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Joanne Mouthaan, Berthold P.R. Gersons, Johannes B. Reitsma, Marit Sijbrandij, and Miranda Olff
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injury ,trauma ,early intervention ,prevention ,Internet ,e-Mental Health ,PTSD ,cognitive behavioral therapy (CBT) ,Psychiatry ,RC435-571 - Abstract
Background: Injured trauma victims are at risk of developing Posttraumatic Stress Disorder (PTSD) and other post-trauma psychopathology. So far, interventions using cognitive behavioral techniques (CBT) have proven most efficacious in treating early PTSD in highly symptomatic individuals. No early intervention for the prevention of PTSD for all victims has yet proven effective. In the acute psychosocial care for trauma victims, there is a clear need for easily applicable, accessible, cost-efficient early interventions. Objective: To describe the design of a randomized controlled trial (RCT) evaluating the effectiveness of a brief Internet-based early intervention that incorporates CBT techniques with the aim of reducing acute psychological distress and preventing long-term PTSD symptoms in injured trauma victims. Method: In a two armed RCT, 300 injured trauma victims from two Level-1 trauma centers in Amsterdam, the Netherlands, will be assigned to an intervention or a control group. Inclusion criteria are: being 18 years of age or older, having experienced a traumatic event according to the diagnostic criteria of the DSM-IV and understanding the Dutch language. The intervention group will be given access to the intervention's website (www.traumatips.nl), and are specifically requested to login within the first month postinjury. The primary clinical study outcome is PTSD symptom severity. Secondary outcomes include symptoms of depression and anxiety, quality of life, and social support. In addition, a cost-effectiveness analysis of the intervention will be performed. Data are collected at one week post-injury, prior to first login (baseline), and at 1, 3, 6 and 12 months. Analyses will be on an intention-to-treat basis. Discussion: The results will provide more insight into the effects of preventive interventions in general, and Internet-based early interventions specifically, on acute stress reactions and PTSD, in an injured population, during the acute phase after trauma. We will discuss possible strengths and limitations.
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- 2011
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8. Comparing screening instruments to predict posttraumatic stress disorder.
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Joanne Mouthaan, Marit Sijbrandij, Johannes B Reitsma, Berthold P R Gersons, and Miranda Olff
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Medicine ,Science - Abstract
BACKGROUND:Following traumatic exposure, a proportion of trauma victims develops posttraumatic stress disorder (PTSD). Early PTSD risk screening requires sensitive instruments to identify everyone at risk for developing PTSD in need of diagnostic follow-up. AIMS:This study compares the accuracy of the 4-item SPAN, 10-item Trauma Screening Questionnaire (TSQ) and 22-item Impact of Event Scale-Revised (IES-R) in predicting chronic PTSD at a minimum sensitivity of 80%. METHOD:Injury patients admitted to a level-I trauma centre (N = 311) completed the instruments at a median of 23 days and were clinically assessed for PTSD at 6 months. Areas under the curve and specificities at 80% sensitivity were compared between instruments. RESULTS:Areas under the curve in all instruments were adequate (SPAN: 0.83; TSQ: 0.82; IES-R: 0.83) with no significant differences. At 80% sensitivity, specificities were 64% for SPAN, 59% for TSQ and 72% for IES-R. CONCLUSION:The SPAN, TSQ and IES-R show similar accuracy in early detection of individuals at risk for PTSD, despite differences in number of items. The modest specificities and low positive predictive values found for all instruments could lead to relatively many false positive cases, when applied in clinical practice.
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- 2014
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9. Psychometric properties of the Patient Health Questionnaire-4 (PHQ-4) in 9230 adults across seven European countries: Findings from the ESTSS ADJUST study
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Evaldas Kazlauskas, Odeta Gelezelyte, Monika Kvedaraite, Dean Ajdukovic, Kerstin Bergh Johannesson, Maria Böttche, Kristina Bondjers, Małgorzata Dragan, Margarida Figueiredo-Braga, Piotr Grajewski, Xenia Anastassiou-Hadjicharalambous, Jana Darejan Javakhishvili, Chrysanthi Lioupi, Brigitte Lueger-Schuster, Joanne Mouthaan, Ines Rezo Bagaric, Luisa Sales, Ingo Schäfer, Suzan Soydas, Lela Tsiskarishvili, Irina Zrnic Novakovic, and Annett Lotzin
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Psychiatry and Mental health ,Clinical Psychology - Published
- 2023
10. Effects of dialogical mindfulness on psychopathology: A pilot study’s results from a seven-day psychosynthesis course about the inner child
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Kerem Böge, Annegret Krause-Utz, and Joanne Mouthaan
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medicine.medical_specialty ,Psychotherapist ,Mindfulness ,Social Psychology ,Dialogical self ,Psychosomatic medicine ,Psychosynthesis ,Transpersonal psychology ,Inner child ,medicine ,Psychology ,Mindfulness based interventions ,Applied Psychology ,Psychopathology - Published
- 2020
11. Predicting transitions between longitudinal classes of posttraumatic stress disorder, adjustment disorder, and well-being during the COVID-19 pandemic: Protocol of a latent transition model in a general Dutch sample
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Marloes B. Eidhof, Simon Groen, Marie-Jose van Hoof, Lonneke I. M. Lenferink, Trudy Mooren, Suzan Soydas, Joanne Mouthaan, and Ann M. Fritz
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Longitudinal study ,Adjustment disorders ,Pandemic ,Well-being ,Traumatic stress ,medicine ,Psychological intervention ,medicine.disease ,Psychology ,Mental health ,psychiatry and clinical psychology ,Clinical psychology ,Psychopathology - Abstract
BackgroundA growing body of literature shows profound effects of the COVID-19 pandemic on mental health, among which increased rates of posttraumatic stress disorder (PTSD) and adjustment disorder (AD). However, current research efforts have largely been unilateral, focusing on psychopathology and not including well-being, and are dominated by examining average psychopathology levels or on disorder absence/presence, thereby ignoring individual differences in mental health. Knowledge on individual differences, as depicted by latent subgroups, in the full spectrum of mental health may provide valuable insights in how individuals transition between health states and factors that predict transitioning from resilient to symptomatic classes. Our aim is to (1) identify longitudinal classes (i.e., subgroups of individuals) based on indicators of PTSD, AD, and well-being in response to the pandemic and (2) examine predictors of transitioning between these subgroups.Methods and analysisWe will conduct a three-wave longitudinal online survey-study of n ≥ 2000 adults from the general Dutch population. The first measurement occasion takes place six months after the start of the pandemic, followed by two follow-up measurements with six months intervals. Latent transition analysis will be used for data-analysis.Ethics and disseminationEthical approval has been obtained from four Dutch universities. Longitudinal study designs are vital to monitor mental health (and predictors thereof) in the pandemic to develop preventive and curative mental health interventions. This study is carried out by researchers who are board members of the Dutch Society for Traumatic Stress Studies and is part of a pan-European study (initiated by the European Society for Traumatic Stress Studies) examining the impact of the pandemic in eleven countries. Results will be published in peer-reviewed journals and disseminated at conferences, via newsletters, and media-appearance among (psychotrauma-)professionals and the general public.Strengths and limitations of this studyThis is one of the first studies examining the mental health impact of the COVID-19 pandemic by focusing on negative and positive mental health in the general population.A longitudinal research design is used, which enable us to examine predictors of transitioning between mental health classes over three time points.A limitation of this study is that we used self-report measures, instead of clinical interviews, to assess mental health.
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- 2021
12. Childhood Maltreatment, Borderline Personality Features, and Coping as Predictors of Intimate Partner Violence
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Antonia Z. Wöhlke, Charlotte C. van Schie, Annegret Krause-Utz, Julian B. Renn, Joanne Mouthaan, Lea J. Mertens, and Pauline Lucke
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Adult ,Male ,Child abuse ,Coping (psychology) ,child abuse ,media_common.quotation_subject ,education ,Intimate Partner Violence ,Poison control ,Cycle of violence ,intergenerational transmission of trauma ,Neglect ,mental disorders ,predicting domestic violence ,Adaptation, Psychological ,Injury prevention ,Humans ,Personality ,0501 psychology and cognitive sciences ,revictimization ,Child ,Crime Victims ,Applied Psychology ,media_common ,domestic violence ,sexual assault ,neglect ,050901 criminology ,05 social sciences ,Articles ,social sciences ,Clinical Psychology ,Domestic violence ,Female ,0509 other social sciences ,Psychology ,050104 developmental & child psychology ,Clinical psychology - Abstract
Intimate partner violence (IPV) is a serious mental and physical health concern worldwide. Although previous research suggests that childhood maltreatment increases the risk for IPV, the underlying psychological mechanisms of this relationship are not yet entirely understood. Borderline personality (BP) features may play an important role in the cycle of violence, being associated with interpersonal violence in both childhood and adult relationships. The present study investigated whether BP features mediate the relationship between childhood maltreatment and IPV, differentiating between perpetration and victimization, and taking maladaptive stress coping and gender into account. Self-reports on IPV, childhood trauma, BP features, and maladaptive stress coping were collected in a mixed (nonclinical and clinical) sample of 703 adults (n = 537 female, n = 166 male), using an online survey. A serial mediation analysis (PROCESS) was performed to quantify the direct effect of childhood maltreatment on IPV and its indirect effects through BP features and maladaptive coping. Childhood maltreatment severity significantly positively predicted IPV perpetration as well as victimization. BP features, but not coping, partially mediated this relationship. Follow-up analyses suggest that affective instability and interpersonal disturbances (e.g., separation concerns) play an important role in IPV perpetration, while interpersonal and identity disturbances may mediate the effect of childhood maltreatment on IPV victimization. In clinical practice, attention should be paid not only to histories of childhood abuse and neglect but also to BP features, which may be possible risk factors for IPV.
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- 2018
13. Forecasting individual risk for long-term Posttraumatic Stress Disorder in emergency medical settings using biomedical data: A machine learning multicenter cohort study
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Joanne Mouthaan, Marit Sijbrandij, Mirjam van Zuiden, Isaac R. Galatzer-Levy, Katharina Schultebraucks, Miranda Olff, Adult Psychiatry, APH - Global Health, APH - Mental Health, ANS - Mood, Anxiety, Psychosis, Stress & Sleep, Clinical Psychology, and World Health Organization (WHO) Collaborating Center
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Neurophysiology and neuropsychology ,Physiology ,Thyroid hormones ,Psychological intervention ,Vital signs ,Poison control ,Neurosciences. Biological psychiatry. Neuropsychiatry ,Machine learning ,computer.software_genre ,Biochemistry ,Occupational safety and health ,03 medical and health sciences ,Cellular and Molecular Neuroscience ,0302 clinical medicine ,Endocrinology ,Injury prevention ,Medicine ,Original Research Article ,RC346-429 ,Molecular Biology ,Traumatic stress ,Endocrine and Autonomic Systems ,business.industry ,QP351-495 ,HPA axis ,Human factors and ergonomics ,PTSD ,Prognosis ,Pharmacotherapy ,030227 psychiatry ,Artificial intelligence ,Neurology. Diseases of the nervous system ,business ,computer ,030217 neurology & neurosurgery ,Biomarkers ,Cohort study ,RC321-571 - Abstract
The necessary requirement of a traumatic event preceding the development of Posttraumatic Stress Disorder, theoretically allows for administering preventive and early interventions in the early aftermath of such events. Machine learning models including biomedical data to forecast PTSD outcome after trauma are highly promising for detection of individuals most in need of such interventions. In the current study, machine learning was applied on biomedical data collected within 48 h post-trauma to forecast individual risk for long-term PTSD, using a multinominal approach including the full spectrum of common PTSD symptom courses within one prognostic model for the first time. N = 417 patients (37.2% females; mean age 46.09 ± 15.88) admitted with (suspected) serious injury to two urban Academic Level-1 Trauma Centers were included. Routinely collected biomedical information (endocrine measures, vital signs, pharmacotherapy, demographics, injury and trauma characteristics) upon ED admission and subsequent 48 h was used. Cross-validated multi-nominal classification of longitudinal self-reported symptom severity (IES-R) over 12 months and bimodal classification of clinician-rated PTSD diagnosis (CAPS-IV) at 12 months post-trauma was performed using extreme Gradient Boosting and evaluated on hold-out sets. SHapley Additive exPlanations (SHAP) values were used to explain the derived models in human-interpretable form. Good prediction of longitudinal PTSD symptom trajectories (multiclass AUC = 0.89) and clinician-rated PTSD at 12 months (AUC = 0.89) was achieved. Most relevant prognostic variables to forecast both multinominal and dichotomous PTSD outcomes included acute endocrine and psychophysiological measures and hospital-prescribed pharmacotherapy. Thus, individual risk for long-term PTSD was accurately forecasted from biomedical information routinely collected within 48 h post-trauma. These results facilitate future targeted preventive interventions by enabling future early risk detection and provide further insights into the complex etiology of PTSD., Highlights • Accurate PTSD prognosis early post-trauma is required for effective preventive interventions. • We performed prognostic modeling of PTSD risk in emergency department patients. • Machine learning was applied on early biomedical data to forecast PTSD at 12 months. • Good prediction of multinominal PTSD course and PTSD diagnostic status was achieved. • Endocrine and physiological measures and pharmacotherapy were relevant features.
- Published
- 2021
14. Impact of dissociation on the effectiveness of psychotherapy for post-traumatic stress disorder: meta-analysis
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A.J.W. van der Does, A. van Minnen, Joanne Mouthaan, Chris M. Hoeboer, Danielle A.C. Oprel, R.A. de Kleine, Maartje Schoorl, and Marc L. Molendijk
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group psychotherapy ,050103 clinical psychology ,medicine.medical_specialty ,Psychotherapist ,medicine.drug_class ,medicine.medical_treatment ,PsycINFO ,Review ,Dissociative ,Group psychotherapy ,Experimental Psychopathology and Treatment ,03 medical and health sciences ,0302 clinical medicine ,mental disorders ,medicine ,Dissociative disorders ,0501 psychology and cognitive sciences ,Psychiatry ,business.industry ,05 social sciences ,Traumatic stress ,Publication bias ,medicine.disease ,030227 psychiatry ,individual psychotherapy ,Clinical trial ,Psychiatry and Mental health ,Meta-analysis ,post-traumatic stress disorder ,business - Abstract
Background Many patients with post-traumatic stress disorder (PTSD) experience dissociative symptoms. The question of whether these dissociative symptoms negatively influence the effectiveness of psychotherapy for PTSD is unresolved. Aims To determine the influence of dissociative symptoms on psychotherapy outcome in PTSD. Method We conducted a systematic search in Cochrane, Embase, PILOTS, PsycINFO, PubMed and Web of Science for relevant clinical trials. A random-effects meta-analysis examined the impact of dissociation on psychotherapy outcome in PTSD (pre-registered at Prospero CRD42018086575). Results Twenty-one trials (of which nine were randomised controlled trials) with 1714 patients were included. Pre-treatment dissociation was not related to treatment effectiveness in patients with PTSD (Pearson's correlation coefficient 0.04, 95% CI −0.04 to 0.13). Between-study heterogeneity was high but was not explained by moderators such as trauma focus of the psychotherapy or risk of bias score. There was no indication for publication bias. Conclusions We found no evidence that dissociation moderates the effectiveness of psychotherapy for PTSD. The quality of some of the included studies was relatively low, emphasising the need for high-quality clinical trials in patients with PTSD. The results suggest that pre-treatment dissociation does not determine psychotherapy outcome in PTSD.
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- 2020
15. Longitudinal course of suicidal ideation and predictors of its persistence - A NESDA study
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Merijn Eikelenboom, Willem van der Does, Maartje Schoorl, Joanne Mouthaan, Annegret Krause-Utz, Liia Kivelä, Bernet M. Elzinga, Rianne A. de Kleine, Brenda W.J.H. Penninx, Niki Antypa, Psychiatry, APH - Mental Health, and APH - Digital Health
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Adult ,Male ,Poison control ,Suicide prevention ,Suicidal Ideation ,Risk Factors ,Injury prevention ,medicine ,Humans ,Longitudinal Studies ,Suicidal ideation ,Depression (differential diagnoses) ,Demography ,Netherlands ,Suicide attempt ,business.industry ,Incidence ,Loneliness ,Psychiatry and Mental health ,Clinical Psychology ,Disease Progression ,Anxiety ,Female ,medicine.symptom ,business ,Clinical psychology - Abstract
BackgroundPrior research indicates that the factors that trigger suicidal ideation may differ from those that maintain it, but studies into the maintenance of suicidal ideation remain scarce. Our aim was to assess the longitudinal course of suicidal ideation, and to identify predictors of persistent suicidal ideation.MethodsWe used data from the Netherlands Study of Depression and Anxiety (NESDA). We performed a linear mixed-effects growth model analysis (n = 230 with current suicidal ideation at baseline) to assess the course of suicidal ideation over time (baseline through 2-, 4-, 6- and 9-year follow-up). We used logistic regression analysis (n = 195) to test whether factors previously associated with the incidence of suicidal ideation in the literature (insomnia, hopelessness, loneliness, borderline personality traits, childhood trauma, negative life events) also predict persistence of suicidal ideation (i.e., reporting ideation at two consecutive assessment points, 6- and 9-years). We controlled for socio-demographics, clinical diagnosis and severity, medication use, and suicide attempt history.ResultsSuicidal ideation decreased over time, and this decrease became slower with increasing time, with the majority of symptom reductions occurring in the first two years of follow-up. More severe insomnia and hopelessness were associated with increased odds of persistent suicidal ideation, and hopelessness was a significant mediator of the relationship between insomnia and persistent suicidal ideation.LimitationsFindings may not generalize to those with more severe suicidal ideation due to dropout of those with the worst clinical profile.ConclusionsTargeting insomnia and hopelessness in treatment may be particularly important to prevent the persistence of suicidal ideation.
- Published
- 2019
16. E-Learning to Improve Suicide Prevention Practice Skills Among Undergraduate Psychology Students: Randomized Controlled Trial (Preprint)
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Marie-Louise J Kullberg, Joanne Mouthaan, Maartje Schoorl, Derek de Beurs, Robin Maria Francisca Kenter, and Ad JFM Kerkhof
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education - Abstract
BACKGROUND Despite increasing evidence of the effectiveness of digital learning solutions in higher vocational education, including the training of allied health professionals, the impact of Web-based training on the development of practical skills in psychiatry and psychology, in general, and in suicide prevention, specifically, remains largely understudied. OBJECTIVE This study aimed to determine the effectiveness of an electronic learning (e-learning) module on the adherence to suicide prevention guidelines, knowledge of practical skills, and provider’s confidence to have a conversation about suicidal behavior with undergraduate psychology students. METHODS The e-learning module, comprising video recordings of therapist-patient interactions, was designed with the aim of transferring knowledge about suicide prevention guideline recommendations. The program’s effects on guideline adherence, self-evaluated knowledge, and provider’s confidence were assessed using online questionnaires before the program (baseline and at 1 month [T1] and 3 months after baseline). The eligible third- and fourth-year undergraduate psychology students were randomly allocated to the e-learning (n=211) or to a waitlist control condition (n=187), with access to the intervention after T1. RESULTS Overall, the students evaluated e-learning in a fairly positive manner. The intention-to-treat analysis showed that the students in the intervention condition (n=211) reported higher levels of self-evaluated knowledge, provider’s confidence, and guideline adherence than those in the waitlist control condition (n=187) after receiving the e-learning module (all P valuesP values>.05) within the intervention group, whereas a significant improvement was observed in the waitlist control group (all P values CONCLUSIONS An e-learning intervention on suicide prevention could be an effective first step toward improved knowledge of clinical skills. The learning outcomes of a stand-alone module were found to be similar to those of a training that combined e-learning with a face-to-face training, with the advantages of flexibility and low costs.
- Published
- 2019
17. Forecasting PTSD Course From Acute Post-Trauma Biomedical Data: A Machine Learning Multicenter Cohort Study
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Marit Sijbrandij, Isaac R. Galatzer-Levy, Mirjam van Zuiden, Miranda Olff, Katharina Schultebraucks, and Joanne Mouthaan
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medicine.medical_specialty ,Biomedical data ,business.industry ,Physical therapy ,medicine ,business ,Biological Psychiatry ,Course (navigation) ,Cohort study - Published
- 2020
18. Trauma and trauma care in Europe
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Evaldas Kazlauskas, Dominic Murphy, Ingo Schäfer, Marit Sijbrandij, Naomi Vandamme, Laurine Egreteau, Maja Lis-Turlejska, Małgorzata Dragan, Filip K. Arnberg, Tetiana Nazarenko, Manoëlle Hopchet, Natalia Nalyvaiko, Luísa Sales, Nino Makhashvili, Wissam El-Hage, Margarida Figueiredo-Braga, Vittoria Ardino, Astrid Lampe, Dean Ajduković, Cherie Armour, Joanne Mouthaan, Jana Darejan Javakhishvili, Imagerie et cerveau (iBrain - Inserm U1253 - UNIV Tours ), Université de Tours-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Tours (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM), Clinical Psychology, and APH - Mental Health
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050103 clinical psychology ,Psicotraumatolología ,Psychological intervention ,• Important steps towards a better provision of care for victims of trauma were made in the European countries.• In 2018, ESTSS celebrates its 25th anniversary.• Strategies to promote a better practice include new ESTSS curricula for professionals across Europe ,Review Article ,terapia ,tratamiento ,0302 clinical medicine ,Lietuva (Lithuania) ,State (polity) ,lcsh:Psychiatry ,Psychotraumatology ,media_common ,treatment ,欧洲 ,05 social sciences ,Traumatic stress ,Foundation (evidence) ,Trauma care ,3. Good health ,Europe ,trauma ,心理治疗 ,护理 ,history ,Europa ,ESTSS ,创伤 ,Europos Sąjungos šalys (European Union countries) ,护理, 心理治疗 ,care ,therapy ,lcsh:RC435-571 ,media_common.quotation_subject ,DRUŠTVENE ZNANOSTI. Psihologija ,Nursing ,atención ,historia ,03 medical and health sciences ,Political science ,治疗 ,Psichologinė pagalba / Psychological help ,0501 psychology and cognitive sciences ,Curriculum ,SOCIAL SCIENCES. Psychology ,Omvårdnad ,Mental health ,心理创伤学 ,030227 psychiatry ,[SDV.MHEP.PSM]Life Sciences [q-bio]/Human health and pathology/Psychiatrics and mental health ,历史 ,Diversity (politics) - Abstract
The European countries have a long history of exposure to large-scale trauma. In the early 1990s the increasing awareness of the consequences of trauma within the mental health community led to the foundation of local societies for psychotraumatology across Europe and the European Society of Traumatic Stress Studies (ESTSS), which celebrated its 25th anniversary in 2018. The focus of this article is to describe the current state of care for survivors of trauma in the 15 European countries where ESTSS member societies have been established. Brief descriptions on the historical burden of trauma in each country are followed by an overview of the care system for trauma survivors in the countries, the state-of-the-art of interventions, current challenges in caring for survivors and the topics that need to be most urgently addressed in the future. The reports from the different countries demonstrate how important steps towards a better provision of care for survivors of trauma have been made in Europe. Given the cultural and economic diversity of the continent, there are also differences between the European countries, for instance with regard to the use of evidence-based treatments. Strategies to overcome these differences, like the new ESTSS training curricula for care-providers across Europe, are briefly discussed. Los países Europeos tienen una larga historia de exposición a traumas de larga escala. A principios de la década de 1990, la creciente conciencia de las consecuencias del trauma dentro de la comunidad de salud mental condujo a la fundación de las sociedades locales para la psicotraumatología en Europa y la Sociedad Europea de Estudios de Estrés Traumático (ESTSS), la cual celebra en el 2018 su 25° aniversario. El enfoque de este artículo es describir el estado actual de la atención de los sobrevivientes de traumas en los 15 países Europeos, donde las sociedades miembros de la ESTSS se han establecido. Las descripciones breves sobre la carga histórica de trauma en cada país son seguidas por una descripción general del sistema de atención para sobrevivientes de trauma en el país, el estado de la técnica de las intervenciones, los desafíos actuales en el cuidado de sobrevivientes y los temas que necesitan ser abordados con mayor urgencia en el futuro. Los reportes de los diferentes países demuestran los pasos importantes que se han dado en Europa en la entrega de atención para los sobrevivientes de trauma. Dada la diversidad cultural y económica del continente, hay también diferencias entre los países Europeos, por ejemplo en relación al uso de tratamientos basados en la evidencia. Las estrategias para resolver estas diferencias, como el nuevo curriculum de entrenamiento de la ESTSS para los proveedores de atención a lo largo de Europa son discutidas brevemente. 欧洲国家有遭受大规模创伤的久远历史。在20世纪90年代早期,精神卫生界内越来越意识到创伤的后果,导致了在欧洲各个地区性创伤心理学会和欧洲创伤应激研究学会( European Society of Traumatic Stress Studies;ESTSS)的成立,该学会将于2018年庆祝其成立25周年。本文旨在描述在已建立ESTSS子协会的15个欧洲国家中创伤幸存者护理的当前状况。首先是对每个国家创伤的历史负担的简要描述,之后概述了各国创伤幸存者的护理系统的概述,干预措施的最新技术,护理幸存者面临的的当前挑战以及将来最迫切需要解决的问题。来自不同国家的报告展示了,在欧洲是如何实现为创伤幸存者提供更好的护理。鉴于大陆的文化和经济多样性,欧洲国家之间也存在差异,例如在循证治疗的使用上。我们简要讨论了克服这些差异的策略,例如为跨欧洲的护理服务提供者的新ESTSS培训课程。.
- Published
- 2018
19. Band of Brothers in U.N. Peacekeeping: Social Bonding Among Dutch Peacekeeping Veterans
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Jos M. P. Weerts, Joanne Mouthaan, and Martin Euwema
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Quantitative survey ,Forge ,Political science ,Experimental and Cognitive Psychology ,Social bonding ,Public administration ,Criminology ,Focus group ,General Psychology ,Social Sciences (miscellaneous) ,Peacekeeping - Abstract
The shared experiences of war are commonly known to forge strong bonds among the participating soldiers. Through focus groups (N = 36) and a quantitative survey (N = 340), this study explores the b...
- Published
- 2005
20. The role of early pharmacotherapy in the development of posttraumatic stress disorder symptoms after traumatic injury: an observational cohort study in consecutive patients
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Miranda Olff, Berthold P. R. Gersons, Marit Sijbrandij, Jan S. K. Luitse, Joanne Mouthaan, Johannes B. Reitsma, J. Carel Goslings, Adult Psychiatry, Other departments, Other Research, Surgery, Emergency Department, AMS - Amsterdam Movement Sciences, ANS - Amsterdam Neuroscience, APH - Amsterdam Public Health, Clinical Psychology, and EMGO+ - Mental Health
- Subjects
Adult ,Male ,medicine.medical_specialty ,Time Factors ,Observational Study ,Opioid ,Placebo ,behavioral disciplines and activities ,Stress Disorders, Post-Traumatic ,Pharmacotherapy ,Injury Severity Score ,SDG 3 - Good Health and Well-being ,Internal medicine ,mental disorders ,medicine ,Journal Article ,Humans ,Glasgow Coma Scale ,Psychiatry ,Stress Disorders ,Analgesics ,business.industry ,Trauma center ,Middle Aged ,Analgesics, Opioid ,Psychiatry and Mental health ,Traumatic injury ,Post-Traumatic ,Wounds and Injuries ,Female ,Opiate ,business ,Cohort study ,Follow-Up Studies - Abstract
Objective Pharmacological intervention during traumatic memory consolidation has been suggested to prevent posttraumatic stress disorder (PTSD). The aim of this study was to examine the association between prescription of early pharmacotherapy and the risk of developing PTSD symptoms following traumatic injury. Method The use of opiate analgesics, beta-adrenergic blockers, corticosteroids and benzodiazepines within 48 h postinjury was documented based on hospital charts for 629 Level 1 trauma center patients. PTSD symptoms were assessed using structured clinical interviews. Primary outcome was 6-week PTSD symptoms. Secondary outcomes were PTSD diagnoses at 6 weeks and during 1 year posttrauma. Results Linear regression analyses showed that opiate administration within 48 h was negatively associated with PTSD symptoms at 6 weeks (β=−0.14, P =.009) after controlling for demographic and injury-related characteristics and concurrent pharmacotherapy. Fewer patients with opiates had a PTSD diagnosis at 6 weeks ( P =.047) and during 1 year posttrauma ( P =.013) than patients with none of the specified pharmacotherapies. Low prescription frequency of beta-blockers (3.8%), corticosteroids (2.2%) and benzodiazepines (7.8%) precluded further examination of their role in the development of PTSD symptoms because of limited statistical power. Conclusions This study suggests a possible beneficial influence of opiate administration within 48 h posttrauma on the development of PTSD symptoms. Future studies may evaluate the effectiveness of inhospital opiate analgesics compared to placebo in preventing PTSD and may focus on the mechanisms underlying the effect of opiates in preventing PTSD.
- Published
- 2014
21. Comparing screening instruments to predict posttraumatic stress disorder
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Miranda Olff, Berthold P. R. Gersons, Joanne Mouthaan, Marit Sijbrandij, Johannes B. Reitsma, Clinical Psychology, EMGO+ - Mental Health, Adult Psychiatry, Other departments, Amsterdam Neuroscience, and Amsterdam Public Health
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Male ,Health Screening ,Social Sciences ,Poison control ,lcsh:Medicine ,Occupational safety and health ,Stress Disorders, Post-Traumatic ,Surveys and Questionnaires ,Medicine and Health Sciences ,Psychology ,Mass Screening ,Public and Occupational Health ,Prospective cohort study ,lcsh:Science ,Netherlands ,Multidisciplinary ,Middle Aged ,Anxiety Disorders ,Clinical Psychology ,Area Under Curve ,Predictive value of tests ,Female ,Health Services Research ,Risk assessment ,Research Article ,Clinical psychology ,Adult ,medicine.medical_specialty ,Psychometrics ,Psychological Stress ,Risk Assessment ,Sensitivity and Specificity ,behavioral disciplines and activities ,Trauma Screening Questionnaire ,SDG 3 - Good Health and Well-being ,Diagnostic Medicine ,Predictive Value of Tests ,Mental Health and Psychiatry ,Injury prevention ,medicine ,Humans ,Health Care Quality ,Psychiatry ,Mass screening ,business.industry ,lcsh:R ,Biology and Life Sciences ,Health Care ,lcsh:Q ,business - Abstract
Background: Following traumatic exposure, a proportion of trauma victims develops posttraumatic stress disorder (PTSD). Early PTSD risk screening requires sensitive instruments to identify everyone at risk for developing PTSD in need of diagnostic follow-up. Aims: This study compares the accuracy of the 4-item SPAN, 10-item Trauma Screening Questionnaire (TSQ) and 22-item Impact of Event Scale-Revised (IES-R) in predicting chronic PTSD at a minimum sensitivity of 80%. Method: Injury patients admitted to a level-I trauma centre (N = 311) completed the instruments at a median of 23 days and were clinically assessed for PTSD at 6 months. Areas under the curve and specificities at 80% sensitivity were compared between instruments. Results: Areas under the curve in all instruments were adequate (SPAN: 0.83; TSQ: 0.82; IES-R: 0.83) with no significant differences. At 80% sensitivity, specificities were 64% for SPAN, 59% for TSQ and 72% for IES-R. Conclusion: The SPAN, TSQ and IES-R show similar accuracy in early detection of individuals at risk for PTSD, despite differences in number of items. The modest specificities and low positive predictive values found for all instruments could lead to relatively many false positive cases, when applied in clinical practice. © 2014 Mouthaan et al.
- Published
- 2014
22. The role of acute cortisol and DHEAS in predicting acute and chronic PTSD symptoms
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Marit Sijbrandij, Miranda Olff, J. Carel Goslings, Jan S. K. Luitse, Berthold P. R. Gersons, Joanne Mouthaan, Adult Psychiatry, Other Research, Surgery, Emergency Department, Amsterdam Movement Sciences, Amsterdam Neuroscience, Amsterdam Public Health, Clinical Psychology, and EMGO+ - Mental Health
- Subjects
Adult ,Male ,medicine.medical_specialty ,endocrine system ,Time Factors ,Hydrocortisone ,Endocrinology, Diabetes and Metabolism ,Dehydroepiandrosterone ,Cohort Studies ,Stress Disorders, Post-Traumatic ,chemistry.chemical_compound ,Endocrinology ,Dehydroepiandrosterone sulfate ,SDG 3 - Good Health and Well-being ,Predictive Value of Tests ,Internal medicine ,mental disorders ,medicine ,polycyclic compounds ,Humans ,Prospective cohort study ,Biological Psychiatry ,Aged ,Aged, 80 and over ,Endocrine and Autonomic Systems ,Dehydroepiandrosterone Sulfate ,Trauma center ,Middle Aged ,Prognosis ,Psychiatry and Mental health ,chemistry ,Predictive value of tests ,Acute Disease ,Chronic Disease ,Female ,Trauma resuscitation ,Psychology ,hormones, hormone substitutes, and hormone antagonists ,medicine.drug ,Clinical psychology ,Cohort study - Abstract
Background: Decreased activation of the hypothalamus-pituitary-adrenal (HPA) axis in response to stress is suspected to be a vulnerability factor for posttraumatic stress disorder (PTSD). Previous studies showed inconsistent findings regarding the role of cortisol in predicting PTSD. In addition, no prospective studies have examined the role of dehydroepiandrosterone (DHEA), or its sulfate form DHEAS, and the cortisol-to-DHEA(S) ratio in predicting PTSD. In this study, we tested whether acute plasma cortisol, DHEAS and the cortisol-to-DHEAS ratio predicted PTSD symptoms at 6 weeks and 6 months post-trauma. Methods: Blood samples of 397 adult level-1 trauma center patients, taken at the trauma resuscitation room within hours after the injury, were analyzed for cortisol and DHEAS levels. PTSD symptoms were assessed at 6 weeks and 6 months post-trauma with the Clinician Administered PTSD Scale. Results: Multivariate linear regression analyses showed that lower cortisol predicted PTSD symptoms at both 6 weeks and 6 months, controlling for age, gender, time of blood sampling, injury, trauma history, and admission to intensive care. Higher DHEAS and a smaller cortisol-to-DHEAS ratio predicted PTSD symptoms at 6 weeks, but not after controlling for the same variables, and not at 6 months. Conclusions: Our study provides important new evidence on the crucial role of the HPA-axis in response to trauma by showing that acute cortisol and DHEAS levels predict PTSD symptoms in survivors of recent trauma. © 2014 Elsevier Ltd.
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- 2014
23. Internet-based early intervention to prevent poststraumatic stress disorder in injury patients: Randomized controlled trial
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Joanne Mouthaan, Johannes B. Reitsma, Jan S. K. Luitse, Fred C. Bakker, Miranda Olff, Giel-Jan de Vries, J. Carel Goslings, Berthold P. R. Gersons, Marit Sijbrandij, Rens van de Schoot, Surgery, EMGO - Mental health, Adult Psychiatry, Other departments, AMS - Amsterdam Movement Sciences, Other Research, Emergency Department, ANS - Amsterdam Neuroscience, APH - Amsterdam Public Health, Clinical Psychology, and EMGO+ - Mental Health
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Adult ,Male ,medicine.medical_specialty ,cognitive behavior therapy ,medicine.medical_treatment ,Poison control ,Health Informatics ,Hospital Anxiety and Depression Scale ,lcsh:Computer applications to medicine. Medical informatics ,Early intervention ,law.invention ,Stress Disorders, Post-Traumatic ,prevention ,Randomized controlled trial ,SDG 3 - Good Health and Well-being ,law ,Intervention (counseling) ,medicine ,Psychoeducation ,Humans ,Netherlands ,Original Paper ,Internet ,business.industry ,Prevention ,lcsh:Public aspects of medicine ,Trauma center ,Posttraumatic stress disorder ,lcsh:RA1-1270 ,Middle Aged ,Cognitive behavioral therapy ,early intervention ,posttraumatic stress disorder ,Cognitive behavior therapy ,Physical therapy ,Wounds and Injuries ,Anxiety ,lcsh:R858-859.7 ,Female ,medicine.symptom ,business - Abstract
BACKGROUND: Posttraumatic stress disorder (PTSD) develops in 10-20% of injury patients. We developed a novel, self-guided Internet-based intervention (called Trauma TIPS) based on techniques from cognitive behavioral therapy (CBT) to prevent the onset of PTSD symptoms. OBJECTIVE: To determine whether Trauma TIPS is effective in preventing the onset of PTSD symptoms in injury patients. METHODS: Adult, level 1 trauma center patients were randomly assigned to receive the fully automated Trauma TIPS Internet intervention (n=151) or to receive no early intervention (n=149). Trauma TIPS consisted of psychoeducation, in vivo exposure, and stress management techniques. Both groups were free to use care as usual (nonprotocolized talks with hospital staff). PTSD symptom severity was assessed at 1, 3, 6, and 12 months post injury with a clinical interview (Clinician-Administered PTSD Scale) by blinded trained interviewers and self-report instrument (Impact of Event Scale-Revised). Secondary outcomes were acute anxiety and arousal (assessed online), self-reported depressive and anxiety symptoms (Hospital Anxiety and Depression Scale), and mental health care utilization. Intervention usage was documented. RESULTS: The mean number of intervention logins was 1.7, SD 2.5, median 1, interquartile range (IQR) 1-2. Thirty-four patients in the intervention group did not log in (22.5%), 63 (41.7%) logged in once, and 54 (35.8%) logged in multiple times (mean 3.6, SD 3.5, median 3, IQR 2-4). On clinician-assessed and self-reported PTSD symptoms, both the intervention and control group showed a significant decrease over time (P
- Published
- 2013
24. Internet-based prevention of posttraumatic stress symptoms in injured trauma patients: design of a randomized controlled trial
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Miranda Olff, Berthold P. R. Gersons, Johannes B. Reitsma, Joanne Mouthaan, Marit Sijbrandij, Funding for this study is provided by the Netherlands Organization for Health Research and Development (ZonMw), Grant no. 62300038, and by the Achmea Foundation for Victims and Society (Stichting Achmea Slachtoffer en Samenleving)., Amsterdam Neuroscience, Adult Psychiatry, Amsterdam Public Health, Epidemiology and Data Science, and Clinical Psychology
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medicine.medical_specialty ,Study Protocols ,lcsh:RC435-571 ,injury ,medicine.medical_treatment ,Population ,Psychological intervention ,law.invention ,Randomized controlled trial ,prevention ,law ,Intervention (counseling) ,lcsh:Psychiatry ,e-Mental Health ,medicine ,education ,Psychiatry ,trauma ,early intervention ,Internet ,PTSD ,cognitive behavioral therapy (CBT) ,education.field_of_study ,business.industry ,Cognitive behavioral therapy ,Anxiety ,medicine.symptom ,business ,Psychosocial ,Psychopathology - Abstract
Background: Injured trauma victims are at risk of developing Posttraumatic Stress Disorder (PTSD) and other post-trauma psychopathology. So far, interventions using cognitive behavioral techniques (CBT) have proven most efficacious in treating early PTSD in highly symptomatic individuals. No early intervention for the prevention of PTSD for all victims has yet proven effective. In the acute psychosocial care for trauma victims, there is a clear need for easily applicable, accessible, cost-efficient early interventions. Objective: To describe the design of a randomized controlled trial (RCT) evaluating the effectiveness of a brief Internet-based early intervention that incorporates CBT techniques with the aim of reducing acute psychological distress and preventing long-term PTSD symptoms in injured trauma victims. Method: In a two armed RCT, 300 injured trauma victims from two Level-1 trauma centers in Amsterdam, the Netherlands, will be assigned to an intervention or a control group. Inclusion criteria are: being 18 years of age or older, having experienced a traumatic event according to the diagnostic criteria of the DSM-IV and understanding the Dutch language. The intervention group will be given access to the intervention’s website (www.traumatips.nl), and are specifically requested to login within the first month postinjury. The primary clinical study outcome is PTSD symptom severity. Secondary outcomes include symptoms of depression and anxiety, quality of life, and social support. In addition, a cost-effectiveness analysis of the intervention will be performed. Data are collected at one week post-injury, prior to first login (baseline), and at 1, 3, 6 and 12 months. Analyses will be on an intention-to-treat basis. Discussion: The results will provide more insight into the effects of preventive interventions in general, and Internet-based early interventions specifically, on acute stress reactions and PTSD, in an injured population, during the acute phase after trauma. We will discuss possible strengths and limitations. Keywords: injury; trauma; early intervention; prevention; Internet; e-Mental Health; PTSD; cognitive behavioral therapy (CBT) (Published: 4 November 2011) Citation: European Journal of Psychotraumatology 2011, 2 : 8294 - DOI: 10.3402/ejpt.v2i0.8294 For the abstract, full text in other languages or an interview with the authors, please see Supplementary files in the column to the right (under Reading Tools).
- Published
- 2011
25. Response categories and anger measurement: do fewer categories result in poorer measurement?: development of the DAR5
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Raymond W. Novaco, Graeme Hawthorne, David Forbes, Joanne Mouthaan, and Adult Psychiatry
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Adult ,Male ,Health (social science) ,Social Psychology ,Psychometrics ,Epidemiology ,media_common.quotation_subject ,Poison control ,Test validity ,Anger ,Severity of Illness Index ,Developmental psychology ,Stress Disorders, Post-Traumatic ,Surveys and Questionnaires ,Item response theory ,parasitic diseases ,Humans ,media_common ,Veterans ,fungi ,Australia ,Construct validity ,Reproducibility of Results ,Middle Aged ,Response bias ,Psychiatry and Mental health ,Expressed Emotion ,Convergent validity ,Female ,Psychology ,Clinical psychology - Abstract
Anger is a key long-term outcome from trauma exposure, regardless of trauma type, and it is implicated as a moderator of response to treatment. It therefore seems important that anger is assessed in both epidemiological studies of trauma sequelae and in intervention evaluation research. This study explored the measurement properties of a recently investigated anger scale, the Dimensions of Anger Reactions (DAR) Scale. In our previous study, the DAR was found to be a measure of trait anger, but although brief, the nine response categories per item may have confused respondents, suggesting fewer response categories may work equally well. Additionally, our previous analysis suggested there were two redundant items within the DAR. Three samples of Australian veterans were used to investigate the psychometric properties associated with alterations to the response categories of the DAR; veterans who participated in the DAR validation study, those participating in group therapy programmes for post-traumatic stress disorder, and veterans participating in lifestyle programmes. Item response theory analysis was used to explore the internal properties of competing DAR models, and models were assessed against external criteria. The results showed that the number of item responses in the DAR exceeded channel capacity, and that response bias occurred in the second half of the instrument. We hypothesized that this was due to respondents not discriminating among the many response categories. Based on a modelling exercise in which we reduced the number of DAR items from 7 to 5 and the number of response categories from 9 to 5, validation tests showed that there was no loss of sensitivity, reliability or validity. To avoid confusion with the DAR, we have referred to the revised version of the DAR as the DAR5. We conclude that the DAR5, which abbreviates the original DAR to half its original length, has similar psychometric properties and is therefore to be preferred especially for use with persons who are under stress, cognitively impaired or less mature. The study findings regarding the optimum number of response categories have implications for the development of other instruments.
- Published
- 2006
26. P.4.c.001 Towards rational use of benzodiazepines in posttraumatic stress disorder
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Miranda Olff, Berthold P. R. Gersons, S.A. Steenen, Joanne Mouthaan, and R. van Westrhenen
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Pharmacology ,Psychiatry and Mental health ,medicine.medical_specialty ,Posttraumatic stress ,Neurology ,business.industry ,Medicine ,Pharmacology (medical) ,Neurology (clinical) ,business ,Psychiatry ,Rational use ,Biological Psychiatry - Published
- 2012
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