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Dive into the research topics where Willem F. Scholte is active.

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Featured researches published by Willem F. Scholte.


Social Psychiatry and Psychiatric Epidemiology | 2007

Properties of the Hopkins Symptom Checklist-25 (HSCL-25) and the Self-Reporting Questionnaire (SRQ-20) as screening instruments used in primary care in Afghanistan

Peter Ventevogel; Giel-Jan de Vries; Willem F. Scholte; Nasratullah Rasa Shinwari; Hafizullah Faiz; Ruhullah Nassery; Wim van den Brink; Miranda Olff

BackgroundRecent epidemiological studies in Afghanistan using mental health questionnaires yielded high prevalence rates for anxiety and depression.ObjectivesTo explore the validity in the Afghan cultural context of two mental health questionnaires, the Hopkins Symptom Checklist-25 (HSCL-25) and the Self-Reporting Questionnaire-20 (SRQ-20).MethodsThe two mental health questionnaires were compared against a ‘gold standard’ semi-structured psychiatric interview, the Psychiatric Assessment Schedule (PAS). All instruments were administered to a sample of 116 Pashto-speaking patients (53 men, 63 women) attending primary health care facilities in Eastern Afghanistan.ResultsBoth HSCL-25 and SRQ-20 had modest properties to correctly identify mental disorders, with an AUC (area under the curve) of 0.73 and 0.72 respectively. The optimal cut-off points for this population are different from those often used in transcultural research. For women the optimal cut-off points are higher than usual (2.25 for the HSCL-25 and 17 for the SRQ-20). For men the cut-off point for the HSCL-25 is lower than usual (1.50) and for the SRQ-20 it was 10).ConclusionsThis study underlines the necessity of validating instruments along with cultural context and gender. Earlier studies in Afghanistan may have overestimated the prevalence of mental disorders among women and underestimated the prevalence in men.


International Clinical Psychopharmacology | 1998

Early detection and intervention in schizophrenia.

D.H. Linszen; Peter Dingemans; Marie E. Lenior; Willem F. Scholte; L. De Haan; M. J. Goldstein

During the course of schizophrenia, symptoms tend to increase at the highest rate during the first 5 years of the disease. Moreover, 10% of suicides by schizophrenic patients occur within the first 10 years of schizophrenia being diagnosed. These facts emphasize the importance of early intervention to improve the course of the disease before further deterioration. The use of psychosocial interventions and drug management programmes, in addition to maintenance antipsychotic medication, reduces the risk of psychotic relapse. Continuity of care from inpatient to outpatient treatment also significantly improves outcome, largely as a result of better drug compliance. It appears, however, that the addition of a behavioural family intervention alone to a standard programme offers little additional benefit. The benefits of intervention programmes last only as long as the programme, and patients should continue with such intensive treatment strategies for at least the duration of the critical phase. Under these circumstances, very mild psychotic complaints may be recognized at an early stage so that treatment can begin even earlier, further increasing the chance of an optimal long-term outcome. Further studies of early intervention and relapse prevention are required to support these findings.


Journal of Nervous and Mental Disease | 1993

A dimensional and categorical approach to the symptomatology of recent-onset schizophrenia

A. J. W. Van Der Does; D.H. Linszen; Peter Dingemans; M. A. Nugter; Willem F. Scholte

Sixty-five patients with recent-onset schizophrenia were assessed with two widely used symptom scales, the Brief Psychiatric Rating Scale-Expanded (BPRS-E) and the Psychiatric Assessment Scale (Manchester scale). Principal components analysis of the BPRS-E scores yielded a four-dimensional structure: positive symptoms, negative symptoms, disorganization, and depression. With the Psychiatric Assessment Scale, three dimensions were found: the positive symptoms (delusions, hallucinations) and disorganization (incoherence) appeared in one dimension. A categorical analysis resulted in predominantly positive, negative, and disorganized clusters, but more than half of the sample could not be allocated to any of these groups.


PLOS ONE | 2011

The effect on mental health of a large scale psychosocial intervention for survivors of mass violence: A quasi-experimental study in Rwanda

Willem F. Scholte; Femke Verduin; Astrid M. Kamperman; Theoneste Rutayisire; Aeilko H. Zwinderman; Karien Stronks

Background War has serious and prolonged mental health consequences. It is argued that post-emergency mental health interventions should not only focus on psychological factors but also address the social environment. No controlled trials of such interventions exist. We studied the effect on mental health of a large scale psychosocial intervention primarily aimed at social bonding in post-genocide Rwanda. The programme is implemented at population level without diagnostic criteria for participation. It is open to any person older than 15 years, and enables participation of over 1500 individuals per year. We postulated that the mental health of programme participants would improve significantly relative to non-participants. Methods and Findings We used a prospective quasi-experimental study design with measurement points pre and post intervention and at 8 months follow-up. 100 adults from both sexes in the experimental condition entered the study; follow-up measurements were taken from 81. We selected a control group of 100 respondents with similar age, sex and symptom score distribution from a random community sample in the same region; of these, 73 completed the study. Mental health was assessed by use of the Self Reporting Questionnaire (SRQ-20), a twenty item instrument to detect common mental disorders in primary health care settings. Mean SRQ-20 scores decreased by 2.3 points in the experimental group and 0.8 in the control group (p = 0.033). Women in the experimental group scoring above cut-off at baseline improved with 4.8 points to below cut-off (p<0.001). Men scoring above cut-off at baseline showed a similar trend which was statistically non-significant. No adverse events were observed. Conclusions A large scale psychosocial intervention primarily aimed at social bonding caused a lasting improvement of mental health in survivors of mass violence in Rwanda. This approach may have a similar positive effect in other post-conflict settings. Trial Registration Nederlands Trial Register 1120


BMC Medical Research Methodology | 2011

Psychometric properties and longitudinal validation of the self-reporting questionnaire (SRQ-20) in a Rwandan community setting: a validation study

Willem F. Scholte; Femke Verduin; Anouk van Lammeren; Theoneste Rutayisire; Astrid M. Kamperman

BackgroundThis study took place to enable the measurement of the effects on mental health of a psychosocial intervention in Rwanda. It aimed to establish the capacities of the Self-Reporting Questionnaire (SRQ-20) to screen for mental disorder and to assess symptom change over time in a Rwandan community setting.MethodsThe SRQ-20 was translated into Kinyarwanda in a process of forward and back-translation. SRQ-20 data were collected in a Rwandan setting on 418 respondents; a random subsample of 230 respondents was assessed a second time with a three month time interval. Internal reliability was tested using Cronbachs alpha. The optimal cut-off point was determined by calculating Receiver Operating Curves, using semi-structured clinical interviews as standard in a random subsample of 99 respondents. Subsequently, predictive value, likelihood ratio, and interrater agreement were calculated. The factor structure of the SRQ-20 was determined through exploratory factor analysis. Factorial invariance over time was tested in a multigroup confirmatory factor analysis.ResultsThe reliability of the SRQ-20 in women (α = 0.85) and men (α = 0.81) could be considered good. The instrument performed moderately well in detecting common mental disorders, with an area under the curve (AUC) of 0.76 for women and 0.74 for men. Cut-off scores were different for women (10) and men (8). Factor analysis yielded five factors, explaining 38% of the total variance. The factor structure proved to be time invariant.ConclusionsThe SRQ-20 can be used as a screener to detect mental disorder in a Rwandan community setting, but cut-off scores need to be adjusted for women and men separately. The instrument also shows longitudinal factorial invariance, which is an important prerequisite for assessing changes in symptom severity. This is a significant finding as in non-western post-conflict settings the relevance of diagnostic categories is questionable. The use of the SRQ-20 can be considered an alternative option for measuring the effect of a psychosocial intervention on mental health.Trial registrationNederlands Trial Register NTR1120.


Schizophrenia Research | 1996

Symptoms, cognitive and social functioning in recent-onset schizophrenia: A longitudinal study

A.J.W. Van der Does; Peter Dingemans; D.H. Linszen; M. A. Nugter; Willem F. Scholte

The relationships among symptoms, cognitive functioning and social functioning were investigated in patients with schizophrenia over a period of 15 months. Patients with a mood disorder, a normal control group and a sample of parents of the schizophrenic patients also completed the cognitive tests. In the schizophrenia sample, only disorganisation was correlated with cognitive performance, which was interpreted as further evidence that disorganisation is a separate symptom dimension of schizophrenia. Against expectations, with two of three measurements no significant correlations were found between negative symptoms and cognitive performance. With these two measurements, however, a curvilinear association between negative symptoms and cognitive performance was observed, suggesting that negative symptoms are not a unitary concept. Finally, tentative evidence could be obtained for speed of information processing and selective attention as markers for vulnerability, although the latter is not specific for schizophrenia.


Intervention | 2008

Community based sociotherapy in Byumba, Rwanda

Annemiek Richters; Cora Dekker; Willem F. Scholte

A community based sociotherapy programme was implemented in the North of Rwanda in 2005. This article describes the background of sociotherapy, explains its principles and application in therapy for refugees in the Netherlands, and gives a justification for the introduction of the approach in a particular setting in post war and post genocide Rwanda. It then focuses on the development of the programme in this setting and addresses recruitment criteria for facilitators. It includes the qualities these facilitators and programme staff should have, the training process, the programme implementation, as well as the sociotherapy methods applied in the field with some examples from practice, the reception by the various stakeholders and the expansion to other areas. The article ends with a selection of the many challenges the programme faces.


Psychiatry Research-neuroimaging | 1994

Relapse criteria in schizophrenic disorders: Different perspectives

Don Linszen; Peter Dingemans; Marie E. Lenior; M.Annet Nugter; Willem F. Scholte; A.J.Willem Van der Does

Relapse and exacerbation of psychotic symptoms were investigated in a prospective study of 88 patients with recent-onset schizophrenia and related disorders. Relapse definitions were derived from expressed emotion and family intervention studies and based on the Brief Psychiatric Rating Scale (BPRS), the Present State Examination, and clinical judgment. Results indicate that research and clinical criteria represent different perspectives on relapse. Clinical criteria provide a validity check that can verify BPRS-rated changes in partially remitted patients.


Traumatology | 2013

Predeployment Mental Health and Trauma Exposure of Expatriate Humanitarian Aid Workers: Risk and Resilience Factors

Cynthia B. Eriksson; Barbara Lopes Cardozo; David W. Foy; Miriam Sabin; Alastair Ager; Leslie Snider; Willem F. Scholte; Reinhard Kaiser; Miranda Olff; Bas Rijnen; Carol A. Gotway Crawford; Julia Zhu; Winnifred Simon

Expatriate aid workers (n = 214) representing 19 nongovernmental organizations (NGOs) completed a predeployment survey, including measures of mental health (depression, anxiety, and posttraumatic stress disorder [PTSD]); risk factors (childhood trauma, family risk, and adult trauma exposure); and resilience factors (coping, social support, and healthy lifestyle) to assess their baseline mental health during preparation for deployment. Multiple regression analysis indicated that childhood trauma/family risk was not significantly related to depression, anxiety, or PTSD symptoms when controlling for report of prior mental illness; yet, adult trauma exposure was significantly related to all three. Social support contributed significant variance to depression and PTSD. NGOs can help applicants recognize the effects of recent trauma and the resilience provided by a healthy social network.


Social Science & Medicine | 2014

In search of links between social capital, mental health and sociotherapy: A longitudinal study in Rwanda

Femke Verduin; Geert E. Smid; Tim R. Wind; Willem F. Scholte

UNLABELLED To date, reviews show inconclusive results on the association between social capital and mental health. Evidence that social capital can intentionally be promoted is also scarce. Promotion of social capital may impact post-conflict recovery through both increased social cohesion and better mental health. However, studies on community interventions and social capital have mostly relied on cross-sectional study designs. We present a longitudinal study in Rwanda on the effect on social capital and mental health of sociotherapy, a community-based psychosocial group intervention consisting of fifteen weekly group sessions. We hypothesized that the intervention would impact social capital and, as a result of that, mental health. We used a quasi-experimental study design with measurement points pre- and post-intervention and at eight months follow-up (2007-2008). Considering sex and living situation, we selected 100 adults for our experimental group. We formed a control group of 100 respondents with similar symptom score distribution, age, and sex from a random community sample in the same region. Mental health was assessed by use of the Self Reporting Questionnaire, and social capital through a locally adapted version of the short Adapted Social Capital Assessment Tool. It measures three elements of social capital: cognitive social capital, support, and civic participation. Latent growth models were used to examine whether effects of sociotherapy on mental health and social capital were related. Civic participation increased with 7% in the intervention group versus 2% in controls; mental health improved with 10% versus 5% (both: p < 0.001). Linear changes over time were not significantly correlated. Support and cognitive social capital did not show consistent changes. These findings hint at the possibility to foster social capital and simultaneously impact mental health. Further identification of pathways of influence may contribute to the designing of psychosocial interventions that effectively promote recovery in war-affected populations. TRIAL REGISTRATION Nederlands Trial Register 1120.

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Miranda Olff

University of Amsterdam

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D.H. Linszen

University of Amsterdam

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Don Linszen

University of Amsterdam

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