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Dive into the research topics where Derek de Beurs is active.

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Featured researches published by Derek de Beurs.


Journal of Affective Disorders | 2013

The effects of psychotherapy for adult depression on suicidality and hopelessness: a systematic review and meta-analysis.

Pim Cuijpers; Derek de Beurs; Bregje A. J. van Spijker; Matthias Berking; Gerhard Andersson; Ad J. F. M. Kerkhof

BACKGROUND Although treatment guidelines suggest that suicidal patients with depression should be treated for depression with psychotherapy, it is not clear whether these psychological treatments actually reduce suicidal ideation or suicide risk. METHODS We conducted a systematic review and meta-analysis of studies on psychotherapy for depression in which outcomes on suicidality were reported. We also focused on outcomes on hopelessness because this is strongly associated with suicidal behavior in depression. RESULTS Thirteen studies (with 616 patients) were included, three of which examined the effects of psychotherapy for depression on suicidal ideation and suicide risk, and eleven on hopelessness. No studies were found with suicide attempts or completed suicides as the outcome variables. The effects on suicidal ideation and suicide risk were small (g=0.12; 95% CI: -0.20-0.44) and not statistically significant. A power calculation showed that these studies only had sufficient power to find an effect size of g=0.47. The effects on hopelessness were large (g=1.10; 95% CI: 0.72-1.48) and significant, although heterogeneity was very high. Furthermore, significant publication bias was found. After adjustment of publication bias the effect size was reduced to g=0.60. DISCUSSION At this point, there is insufficient evidence for the assumption that suicidality in depressed patients can be reduced with psychotherapy for depression. Although psychotherapy of depression may have small positive effects on suicidality, available data suggest that psychotherapy for depression cannot be considered to be a sufficient treatment. The effects on hopelessness are probably higher.


Frontiers in Psychiatry | 2016

Maximizing the Impact of e-Therapy and Serious Gaming: Time for a Paradigm Shift.

Theresa Fleming; Derek de Beurs; Yasser Khazaal; Andrea Gaggioli; Giuseppe Riva; Cristina Botella; Rosa María Baños; Filippo Aschieri; Lynda Bavin; Annet Kleiboer; Sally Merry; Ho Ming Lau; Heleen Riper

Internet interventions for mental health, including serious games, online programs, and apps, hold promise for increasing access to evidence-based treatments and prevention. Many such interventions have been shown to be effective and acceptable in trials; however, uptake and adherence outside of trials is seldom reported, and where it is, adherence at least, generally appears to be underwhelming. In response, an international Collaboration On Maximizing the impact of E-Therapy and Serious Gaming (COMETS) was formed. In this perspectives’ paper, we call for a paradigm shift to increase the impact of internet interventions toward the ultimate goal of improved population mental health. We propose four pillars for change: (1) increased focus on user-centered approaches, including both user-centered design of programs and greater individualization within programs, with the latter perhaps utilizing increased modularization; (2) Increased emphasis on engagement utilizing processes such as gaming, gamification, telepresence, and persuasive technology; (3) Increased collaboration in program development, testing, and data sharing, across both sectors and regions, in order to achieve higher quality, more sustainable outcomes with greater reach; and (4) Rapid testing and implementation, including the measurement of reach, engagement, and effectiveness, and timely implementation. We suggest it is time for researchers, clinicians, developers, and end-users to collaborate on these aspects in order to maximize the impact of e-therapies and serious gaming.


Journal of Affective Disorders | 2015

The effect of an e-learning supported train-the-trainer programme on implementation of suicide guidelines in mental health care

Derek de Beurs; Marieke de Groot; Jos de Keijser; Jan Mokkenstorm; Erik van Duijn; Remco F.P. de Winter; Ad J. F. M. Kerkhof

BACKGROUND Randomized studies examining the effect of training of mental health professionals in suicide prevention guidelines are scarce. We assessed whether professionals benefited from an e-learning supported Train-the-Trainer programme aimed at the application of the Dutch multidisciplinary suicide prevention guideline. METHODS 45 psychiatric departments from all over the Netherlands were clustered in pairs and randomized. In the experimental condition, all of the staff of psychiatric departments was trained by peers with an e-learning supported Train-the-Trainer programme. Guideline adherence of individual professionals was measured by means of the response to on-line video fragments. Multilevel analyses were used to establish whether variation between conditions was due to differences between individual professionals or departments. RESULTS Multilevel analysis showed that the intervention resulted in an improvement of individual professionals. At the 3 month follow-up, professionals who received the intervention showed greater guideline adherence, improved self-perceived knowledge and improved confidence as providers of care than professionals who were only exposed to traditional guideline dissemination. Subgroup analyses showed that improved guideline adherence was found among nurses but not among psychiatrists and psychologists. No significant effect of the intervention on team performance was found. LIMITATIONS The ICT environment in departments was often technically inadequate when displaying the video clips clip of the survey. This may have caused considerable drop-out and possibly introduced selection bias, as professionals who were strongly affiliated to the theme of the study might have been more likely to finish the study. CONCLUSIONS Our results support the idea that an e-learning supported Train-the-Trainer programme is an effective strategy for implementing clinical guidelines and improving care for suicidal patients. TRIAL REGISTRATION Netherlands Trial Register (NTR3092 www.trialregister.nl).


Journal of Affective Disorders | 2016

Combining pharmacotherapy and psychotherapy or monotherapy for major depression? A meta-analysis on the long-term effects

Eirini Karyotaki; Y. Smit; K. Holdt Henningsen; M.J.H. Huibers; Jo Robays; Derek de Beurs; Pim Cuijpers

BACKGROUND The present meta-analysis aimed to examine to what extent combined pharmacotherapy with psychotherapy results in a different response to treatment compared to psychotherapy or pharmacotherapy alone in adults with major depression at six months or longer postrandomization. METHODS A systematic literature search resulted in 23 randomized controlled trials with 2184 participants. Combined treatment was compared to either psychotherapy or anti-depressant medication alone in both the acute phase and the maintenance phase. Odds ratios of a positive outcome were calculated for all comparisons. RESULTS In acute phase treatment, combined psychotherapy with antidepressants outperformed antidepressants alone at six months or longer postrandomization in patients with major depressive disorder (OR=2.93, 95%CI 2.15-3.99, p<0.001). Heterogeneity was zero (95%CI 0-57%, p>0.05). However, combined therapy resulted in equal response to treatment compared to psychotherapy alone at six months or longer postrandomization. As for the maintenance treatment, combined maintenance psychotherapy with antidepressants resulted in better-sustained treatment response compared to antidepressants at six months or longer postrandomization (OR=1.61, 95%CI 1.14-2.27, p<0.05). Heterogeneity was zero (95%CI 0-68%, p>0.05). CONCLUSIONS Combined therapy results in a superior enduring effect compared to antidepressants alone in patients with major depression. Psychotherapy is an adequate alternative for combined treatment in the acute phase as it is as effective as combined treatment in the long-term.


Journal of Medical Internet Research | 2014

Applying computer adaptive testing to optimize online assessment of suicidal behavior: a simulation study

Derek de Beurs; Anton Lm de Vries; Marieke de Groot; Jos de Keijser; Ad J. F. M. Kerkhof

Background The Internet is used increasingly for both suicide research and prevention. To optimize online assessment of suicidal patients, there is a need for short, good-quality tools to assess elevated risk of future suicidal behavior. Computer adaptive testing (CAT) can be used to reduce response burden and improve accuracy, and make the available pencil-and-paper tools more appropriate for online administration. Objective The aim was to test whether an item response–based computer adaptive simulation can be used to reduce the length of the Beck Scale for Suicide Ideation (BSS). Methods The data used for our simulation was obtained from a large multicenter trial from The Netherlands: the Professionals in Training to STOP suicide (PITSTOP suicide) study. We applied a principal components analysis (PCA), confirmatory factor analysis (CFA), a graded response model (GRM), and simulated a CAT. Results The scores of 505 patients were analyzed. Psychometric analyses showed the questionnaire to be unidimensional with good internal consistency. The computer adaptive simulation showed that for the estimation of elevation of risk of future suicidal behavior 4 items (instead of the full 19) were sufficient, on average. Conclusions This study demonstrated that CAT can be applied successfully to reduce the length of the Dutch version of the BSS. We argue that the use of CAT can improve the accuracy and the response burden when assessing the risk of future suicidal behavior online. Because CAT can be daunting for clinicians and applied scientists, we offer a concrete example of our computer adaptive simulation of the Dutch version of the BSS at the end of the paper.


Trials | 2013

Improving the application of a practice guideline for the assessment and treatment of suicidal behavior by training the full staff of psychiatric departments via an e-learning supported Train-the-Trainer program : study protocol for a randomized controlled trial

Derek de Beurs; Marieke de Groot; Jos de Keijser; Bastiaan Verwey; Jan Mokkenstorm; Jos W. R. Twisk; Erik van Duijn; Albert M. van Hemert; Lia Verlinde; Jan Spijker; Bert van Luijn; Jan Vink; Ad J. F. M. Kerkhof

BackgroundIn 2012, in The Netherlands a multidisciplinary practice guideline for the assessment and treatment of suicidal behavior was issued. The release of guidelines often fails to change professional behavior due to multiple barriers. Structured implementation may improve adherence to guidelines. This article describes the design of a study measuring the effect of an e-learning supported Train-the-Trainer program aiming at the training of the full staff of departments in the application of the guideline. We hypothesize that both professionals and departments will benefit from the program.MethodIn a multicenter cluster randomized controlled trial, 43 psychiatric departments spread over 10 regional mental health institutions throughout The Netherlands will be clustered in pairs with respect to the most prevalent diagnostic category of patients and average duration of treatment. Pair members are randomly allocated to either the experimental or the control condition. In the experimental condition, the full staff of departments, that is, all registered nurses, psychologists, physicians and psychiatrists (n = 532, 21 departments) will be trained in the application of the guideline, in a one-day small interactive group Train-the-Trainer program. The program is supported by a 60-minute e-learning module with video vignettes of suicidal patients and additional instruction. In the control condition (22 departments, 404 professionals), the guideline shall be disseminated in the traditional way: through manuals, books, conferences, internet, reviews and so on. The effectiveness of the program will be assessed at the level of both health care professionals and departments.DiscussionWe aim to demonstrate the effect of training of the full staff of departments with an e-learning supported Train-the-Trainer program in the application of a new clinical guideline. Strengths of the study are the natural setting, the training of full staff, the random allocation to the conditions, the large scale of the study and the willingness of both staff and management to participate in the study.Trial registrationDutch trial register: NTR3092


Psychiatry Research-neuroimaging | 2015

Longitudinal Measurement invariance of the Beck Scale for Suicide Ideation

Derek de Beurs; Marjolein Fokkema; Marieke de Groot; Jos de Keijser; Ad J. F. M. Kerkhof

In mental health care, both clinical and scientific decisions are based on within-subject comparisons of test scores on the same self-report questionnaire at different points in time. To establish the validity of test score comparisons over time, longitudinal measurement invariance should be established. The current study tested whether the 19 item Beck Scale for Suicide Ideation (BSS) is measurement invariant (MI) over time. As the first five items of the scale are often used to screen for the presence of suicidal thoughts, we also tested a model consisting of only the first five items. Psychiatric in- and out-patients (n=475) completed the questionnaire upon admission and after 3 months. By means of confirmatory factor analysis (CFA) we tested whether the parameters of a single factor model were equal over time. All fit indices indicated that both the 19-item questionnaire and the five-item screener were measurement invariant over time. This means that changes in test-scores over time can be attributed to true changes in the construct of interest. These findings legitimate the use of the 19 item scale and the five-item screener in longitudinal assessments.


Crisis-the Journal of Crisis Intervention and Suicide Prevention | 2015

The Role of Mobile Phone Technology in Understanding and Preventing Suicidal Behavior

Derek de Beurs; Olivia J. Kirtley; Ad J. F. M. Kerkhof; Gwendolyn Portzky; Rory C. O'Connor

In this editorial, we discuss how mobile phone technology has the potential to move the field forward in terms of understanding suicide risk as well as laying foundations for the development of effective treatments/interventions. We have focused on mobile health technology given the rapid growth of mobile health approaches in suicide prevention (De Jaegere & Portzky, 2014; Mishara & Kerkhof, 2013) and psychological research more generally (Myin-Germeys et al., 2009; Nock, Prinstein, & Sterba, 2009; Palmier-Claus et al., 2011) and because mobile phone use is ubiquitous, with 75% of the world having access to a mobile phone (Kay, 2011). (aut. ref.)


Depression and Anxiety | 2016

THE LONG-TERM EFFICACY OF ACUTE-PHASE PSYCHOTHERAPY FOR DEPRESSION: A META-ANALYSIS OF RANDOMIZED TRIALS

Eirini Karyotaki; Yolba Smit; Derek de Beurs; Kirsten Holdt Henningsen; Jo Robays; M.J.H. Huibers; Erica Weitz; Pim Cuijpers

Understanding the effectiveness of treatment for depression in both the short term and long term is essential for clinical decision making. The present meta‐analysis examined treatment effects on depression and quality of life in acute‐phase psychotherapeutic interventions compared to no treatment control groups for adult depression at 6 months or longer postrandomization.


Frontiers in Psychiatry | 2017

Active Involvement of End Users When Developing Web-Based Mental Health Interventions

Derek de Beurs; Inge Renske van Bruinessen; Janneke Noordman; Roland Friele; Sandra van Dulmen

Background Although many web-based mental health interventions are being released, the actual uptake by end users is limited. The marginal level of engagement of end users when developing these interventions is recognized as an important cause for uptake problems. In this paper, we offer our perceptive on how to improve user engagement. By doing so, we aim to stimulate a discourse on user involvement within the field of online mental health interventions. Methods We shortly describe three different methods (the expert-driven method, intervention mapping, and scrum) that were currently used to develop web-based health interventions. We will focus to what extent the end user was involved in the developmental phase, and what the additional challenges were. In the final paragraph, lessons learned are summarized, and recommendations provided. Results Every method seems to have its trade-off: if end users are highly involved, availability of end users and means become problematic. If end users are less actively involved, the product may be less appropriate for the end user. Other challenges to consider are the funding of the more active role of technological companies, and the time it takes to process the results of shorter development cycles. Conclusion Thinking about user-centered design and carefully planning, the involvement of end users should become standard in the field of web-based (mental) health. When deciding on the level of user involvement, one should balance the need for input from users with the availability of resources such as time and funding.

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Erik van Duijn

Leiden University Medical Center

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Jan Mokkenstorm

VU University Medical Center

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Gé Donker

University of Groningen

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Peter F. M. Verhaak

University Medical Center Groningen

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Ad Kerkhof

VU University Amsterdam

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