International Journal of Methods in Psychiatric Research This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Application of randomized response techniques for investigating cannabis use by Spanish university students
Abstract Cannabis is the most widely used illicit drug in developed countries, and has a significant impact on mental and physical health in the general population. Although the evaluation of levels of substance use is difficult, a method such as the randomized response technique (RRT), which includes both a personal component and an assurance of confidentiality, provides a combination which can achieve a considerable degree of accuracy. Various RRT surveys have been conducted to measure the prevalence of drug use, but to date no studies have been made of the effectiveness of this approach in surveys with respect to quanti...
Source: International Journal of Methods in Psychiatric Research - May 31, 2016 Category: Psychiatry Authors: Beatriz Cobo, M ª Mar Rueda, Francisca López ‐Torrecillas Tags: Original Article Source Type: research

The Prodromal Questionnaire: a case for IRT ‐based adaptive testing of psychotic experiences?
Abstract Computerized adaptive tests (CATs) for positive and negative psychotic experiences were developed and tested in N = 5705 help‐seeking, non‐psychotic young individuals. Instead of presenting all items, CATs choose a varying number of different items during test administration depending on respondents' previous answers, reducing the average number of items while still obtaining accurate person estimates. We assessed the appropriateness of two‐parameter logistic models to positive and negative symptoms of the Prodromal Questionnaire (PQ), computed measurement precision of all items and resulting adaptive te...
Source: International Journal of Methods in Psychiatric Research - May 31, 2016 Category: Psychiatry Authors: Jan Bebber, Johanna T.W. Wigman, Rob R. Meijer, Helga K. Ising, David Berg, Judith Rietdijk, Sara Dragt, Rianne Klaassen, Dorien Nieman, Peter Jonge, Sjoerd Sytema, Marieke Wichers, Don Linszen, Mark Gaag, Lex Wunderink Tags: Original Article Source Type: research

Consistency and factorial invariance of the Davidson trauma scale in heterogeneous populations: results from the 2010 Chilean earthquake
Abstract This investigation seeks to validate an application of a standardized post‐traumatic stress symptom self‐report survey, the Davidson Trauma Scale (DTS), with a large, heterogeneous population of earthquake victims. While previous studies have focused primarily on small samples, this investigation uses a unique dataset to assess the validity of this application of the DTS while accounting for heterogeneity and sample size. We use concurrent validity and reliability analysis tests to confirm the validity of the scale. Further, confirmatory factor analysis is used to test the fit of the data's factor structure ag...
Source: International Journal of Methods in Psychiatric Research - May 31, 2016 Category: Psychiatry Authors: Bryan Kevan Tags: Original Article Source Type: research

Assessment and characterization of phenotypic heterogeneity of anxiety disorders across five large cohorts
Abstract To achieve sample sizes necessary for effectively conducting genome‐wide association studies (GWASs), researchers often combine data from samples possessing multiple potential sources of heterogeneity. This is particularly relevant for psychiatric disorders, where symptom self‐report, differing assessment instruments, and diagnostic comorbidity complicates the phenotypes and contribute to difficulties with detecting and replicating genetic association signals. We investigated sources of heterogeneity of anxiety disorders (ADs) across five large cohorts used in a GWAS meta‐analysis project using a dimensional...
Source: International Journal of Methods in Psychiatric Research - May 31, 2016 Category: Psychiatry Authors: Minyoung Lee, Steven H. Aggen, Takeshi Otowa, Enrique Castelao, Martin Preisig, Hans J. Grabe, Catharina A. Hartman, Albertine J. Oldehinkel, Christel M. Middeldorp, Henning Tiemeier, John M. Hettema Tags: Original Article Source Type: research

The DSM‐5 Dimensional Anxiety Scales in a Dutch non‐clinical sample: psychometric properties including the adult separation anxiety disorder scale
Abstract With DSM‐5, the American Psychiatric Association encourages complementing categorical diagnoses with dimensional severity ratings. We therefore examined the psychometric properties of the DSM‐5 Dimensional Anxiety Scales, a set of brief dimensional scales that are consistent in content and structure and assess DSM‐5‐based core features of anxiety disorders. Participants (285 males, 255 females) completed the DSM‐5 Dimensional Anxiety Scales for social anxiety disorder, generalized anxiety disorder, specific phobia, agoraphobia, and panic disorder that were included in previous studies on the scales, and ...
Source: International Journal of Methods in Psychiatric Research - May 31, 2016 Category: Psychiatry Authors: Eline L. Möller, Susan M. Bögels Tags: Original Article Source Type: research

Estimated probability of becoming a case of drug dependence in relation to duration of drug‐taking experience: a functional analysis approach
This study's novel estimates for cocaine users one month after first use show 2–4% with cocaine dependence; 12–17% are dependent when use has persisted. Corresponding cannabis estimates are 0–1% after one month, but 10–23% when use persists. Duration or persistence of cannabis smoking beyond an initial interval of a few months of use seems to be a signal of noteworthy risk for, or co‐occurrence of, rapid‐onset cannabis dependence, not too distant from cocaine estimates, when we sort newly incident users into subgroups defined by elapsed time from first to most recent use. Copyright © 2016 John Wiley & Sons...
Source: International Journal of Methods in Psychiatric Research - May 31, 2016 Category: Psychiatry Authors: Olga A. Vsevolozhskaya, James C. Anthony Tags: Original Article Source Type: research

Validation of the PTSD screening cartoon test “Darryl” in a Danish clinical sample of children and adolescents
Abstract The current study examined the reliability and validity of a Danish adaptation of “Darryl”, a cartoon‐based measure of DSM‐IV symptoms of post‐traumatic stress disorder (PTSD) in a sample of Danish children and adolescents. Exposure to potentially traumatizing events, PTSD symptoms and diagnostic status were assessed in 65 children between the ages of 7 and 17 years old. Participants were recruited from a crisis centre for battered women and a school for children with emotional and behavioural problems. The study revealed that Darryl has good internal consistency for the overall scale and adequate relia...
Source: International Journal of Methods in Psychiatric Research - May 31, 2016 Category: Psychiatry Authors: Sille Schandorph Løkkegaard, Stine Rønholt, Sidsel Karsberg, Ask Elklit Tags: Original Article Source Type: research

The MATCH cohort study in the Netherlands: rationale, objectives, methods and baseline characteristics of patients with (long‐term) common mental disorders
Abstract Research in the last decades shows that common mental disorders may be long‐term and severely disabling, resulting in severe mental illness (SMI). The percentage of Dutch SMI‐patients with common mental disorders receiving mental health services is estimated at 65–70%. However, it is unclear which patients in fact become SMI‐patients. We need to know more about the possible course of common mental disorders, understand the origins of chronicity in more detail, and have more insight in related care processes and care use of patients with common mental disorders. The MATCH cohort study is a four‐year multi...
Source: International Journal of Methods in Psychiatric Research - May 31, 2016 Category: Psychiatry Authors: Bauke Koekkoek, Willeke Manders, Indira Tendolkar, Giel Hutschemaekers, Bea Tiemens Tags: Original Article Source Type: research

Toward evidence ‐based medical statistics: a Bayesian analysis of double‐blind placebo‐controlled antidepressant trials in the treatment of anxiety disorders
Abstract The Food and Drug Administration (FDA) uses a p < 0.05 null‐hypothesis significance testing framework to evaluate “substantial evidence” for drug efficacy. This framework only allows dichotomous conclusions and does not quantify the strength of evidence supporting efficacy. The efficacy of FDA‐approved antidepressants for the treatment of anxiety disorders was re‐evaluated in a Bayesian framework that quantifies the strength of the evidence. Data from 58 double‐blind placebo‐controlled trials were retrieved from the FDA for the second‐generation antidepressants for the treatment of anxiety d...
Source: International Journal of Methods in Psychiatric Research - May 23, 2016 Category: Psychiatry Authors: Rei Monden, Stijn Vos, Richard Morey, Eric ‐Jan Wagenmakers, Peter Jonge, Annelieke M. Roest Tags: Original Article Source Type: research

Tracking online poker problem gamblers with player account ‐based gambling data only
This study illustrates the feasibility of a method to develop and validate instruments to track online problem gamblers with PABGD only. (Source: International Journal of Methods in Psychiatric Research)
Source: International Journal of Methods in Psychiatric Research - May 18, 2016 Category: Psychiatry Authors: Amandine Luquiens, Marie ‐Laure Tanguy, Amine Benyamina, Marthylle Lagadec, Henri‐Jean Aubin, Michel Reynaud Tags: Original Article Source Type: research

Tracking online poker problem gamblers with player account‐based gambling data only
This study illustrates the feasibility of a method to develop and validate instruments to track online problem gamblers with PABGD only. (Source: International Journal of Methods in Psychiatric Research)
Source: International Journal of Methods in Psychiatric Research - May 18, 2016 Category: Psychiatry Authors: Amandine Luquiens, Marie‐Laure Tanguy, Amine Benyamina, Marthylle Lagadec, Henri‐Jean Aubin, Michel Reynaud Tags: Original Article Source Type: research

Validation of the Resilience Scale for Adolescents (READ) in Ireland: a multi ‐group analysis
This study investigated the validity and reliability of the READ by means of factor analysis, multi‐group analysis, inter‐correlations and internal consistency measures. Participants were 6085 young people in Ireland aged 12–18 years. Participants completed the My World Survey – Second Level (MWS‐SL), assessing risk and protective factors of mental health. Confirmatory factor analysis validated the original five‐factor structure of the READ including Personal Competence, Social Competence, Structured Style, Family Cohesion, and Social Resources, χ2(340) = 6146.02, p < 0.001, RMSEA = 0.056 (90% C...
Source: International Journal of Methods in Psychiatric Research - April 28, 2016 Category: Psychiatry Authors: Yvonne Kelly, Amanda Fitzgerald, Barbara Dooley Tags: Original Article Source Type: research

Meta ‐analysis of population‐based studies comparing risk of cerebrovascular accident associated with first‐ and second‐generation antipsychotic prescribing in dementia
ConclusionMeta‐analysis of population‐based data suggested that the use of SGAs as opposed to FGAs to control BPSD is not associated with significantly increased risk of CVA. Copyright © 2016 John Wiley & Sons, Ltd. (Source: International Journal of Methods in Psychiatric Research)
Source: International Journal of Methods in Psychiatric Research - April 26, 2016 Category: Psychiatry Authors: Ahsan Rao, Amna Suliman, Giles Story, Sabine Vuik, PAUL Aylin, ARA Darzi Tags: Original Article Source Type: research

Mapping the manuals of madness: Comparing the ICD ‐10 and DSM‐IV‐TR using a network approach
This study uses a network approach to investigate the overlap in structure between diagnostic networks pertaining to ICD‐10 and DSM‐IV‐TR. Networks are constructed by representing individual symptoms as nodes, and connecting nodes whenever the corresponding symptoms feature as diagnostic criteria for the same mental disorder. Results indicate that, relative to the DSM‐IV‐TR network, the ICD‐10 network contains (a) more nodes, (b) lower level of clustering, and (c) a higher level of connectivity. Both networks show features of a small world, and have similar (of “the same”) high centrality nodes. Comparison ...
Source: International Journal of Methods in Psychiatric Research - March 29, 2016 Category: Psychiatry Authors: Pia Tio, Sacha Epskamp, Arjen Noordhof, Denny Borsboom Tags: Original Article Source Type: research

Issue Information
No abstract is available for this article. (Source: International Journal of Methods in Psychiatric Research)
Source: International Journal of Methods in Psychiatric Research - March 27, 2016 Category: Psychiatry Tags: Issue Information Source Type: research